oewn-facial-n oewn-facial_nerve-n oewn-nervus_facialis-n oewn-seventh_cranial_nerve-n

cranial nerve that supplies facial muscles


oewn-acoustic_nerve-n oewn-auditory_nerve-n oewn-vestibulocochlear_nerve-n oewn-nervus_vestibulocochlearis-n oewn-eighth_cranial_nerve-n

a composite sensory nerve supplying the hair cells of the vestibular organ and the hair cells of the cochlea


sensory nerve to the pharynx and back of the tongue; motor fibers innervate muscles that elevate the pharynx and larynx; includes parasympathetic fibers to the otic ganglion


oewn-vagus-n oewn-vagus_nerve-n oewn-nervus_vagus-n oewn-pneumogastric-n oewn-pneumogastric_nerve-n oewn-tenth_cranial_nerve-n oewn-wandering_nerve-n

a mixed nerve that supplies the pharynx and larynx and lungs and heart and esophagus and stomach and most of the abdominal viscera


oewn-accessory_nerve-n oewn-spinal_accessory-n oewn-nervus_accessorius-n oewn-eleventh_cranial_nerve-n

arises from two sets of roots (cranial and spinal) that unite to form the nerve


oewn-hypoglossal-n oewn-hypoglossal_nerve-n oewn-nervus_hypoglosus-n oewn-twelfth_cranial_nerve-n

supplies intrinsic muscles of the tongue and other tongue muscles


the portion of the vertebrate nervous system consisting of the brain and spinal cord


that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord


the part of the brain having the most recent phylogenetic origin; the cerebral cortex and related parts


the part of the hindbrain that develops into the pons and the cerebellum


the more primitive parts of the brain phylogenetically; most structures other than the cerebral cortex


the two innermost layers of the meninges; cerebrospinal fluid circulates between these innermost layers


the outermost (and toughest) of the 3 meninges


the highly vascular innermost of the 3 meninges


a space in the meninges beneath the arachnoid membrane and above the pia mater that contains the cerebrospinal fluid


the complex network of unmyelinated axones, dendrites, and glial branches that form the bulk of the central nervous system's grey matter and in which nerve cell bodies are embedded


oewn-grey_matter-n oewn-gray_matter-n oewn-grey_substance-n oewn-gray_substance-n oewn-substantia_grisea-n

greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons


whitish nervous tissue of the CNS consisting of neurons and their myelin sheaths


oewn-pituitary-n oewn-pituitary_gland-n oewn-pituitary_body-n oewn-hypophysis-n

the master gland of the endocrine system; located at the base of the brain


the funnel-shaped stalk connecting the pituitary gland to the hypothalamus


the anterior lobe of the pituitary body; primarily glandular in nature


the anterior part of the anterior pituitary


a thin piece of tissue that has become part of the posterior pituitary


oewn-posterior_pituitary-n oewn-posterior_pituitary_gland-n oewn-neurohypophysis-n oewn-pars_nervosa-n

the posterior lobe of the pituitary body; primarily glandular in nature


oewn-pineal_gland-n oewn-pineal_body-n oewn-epiphysis_cerebri-n oewn-epiphysis-n

a small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin


cell clusters in the pancreas that form the endocrine part of that organ; secrete insulin and other hormones


a major division of the vertebrate brain; situated above the medulla oblongata and beneath the cerebrum in humans


either of two lateral lobes of the cerebellum


a large laminar nucleus of grey matter within the white matter of each cerebral hemisphere


the narrow central part of the cerebellum between the two hemispheres


the anterior lobe of the cerebellum which was one of the earliest parts of the hindbrain to develop in mammals


oewn-cerebral_cortex-n oewn-cerebral_mantle-n oewn-pallium-n oewn-cortex-n

the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum


any of various regions of the cerebral cortex


cortical areas that are neither motor or sensory but are thought to be involved in higher processing of information


one of four small oval masses that protrude slightly from the underside of the thalamus and function as synaptic centers on the way to the cerebral cortex


a neural structure that serves as a processing station on the way from the retina to the occipital lobe of the cerebral cortex


a neural structure that serves as the last of a series of processing centers along the auditory pathway from the cochlea to the temporal lobe of the cerebral cortex


the cortical area that receives auditory information from the medial geniculate body


oewn-Broca-ap-s_area-n oewn-Broca-ap-s_center-n oewn-Broca-ap-s_gyrus-n oewn-Broca-ap-s_convolution-n oewn-convolution_of_Broca-n

the motor speech center in the left hemisphere of the brain in most people


one of the cortical areas mapped out on the basis of its cytoarchitecture


any of the convolutions of the outer surface of the frontal lobe of the cerebrum


any of the convolutions of the outer surface of the temporal lobe of the cerebrum


any of the convolutions of the outer surface of the parietal lobe of the cerebrum


any of the convolutions of the outer surface of the occipital lobe of the cerebrum


a large cortical area (in the left hemisphere in most people) containing all the centers associated with language


oewn-motor_area-n oewn-motor_region-n oewn-motor_cortex-n oewn-Rolando-ap-s_area-n oewn-excitable_area-n

the cortical area that influences motor movements


the areas of the brain that process and register incoming sensory information and make possible the conscious awareness of the world


an area of the cortex including the precentral gyrus and the postcentral gyrus and combining sensory and motor functions


the cortical area that receives information from the lateral geniculate body of the thalamus


the auditory word center; located in the posterior part of the superior temporal convolution in most people


the tissue forming the outer layer of an organ or structure in plant or animal


the inner part of an organ or structure in plant or animal


the cortex of the adrenal gland; secretes corticosterone and sex hormones


the cortex of the kidney containing the glomeruli and the convoluted tubules


the medulla of the adrenal gland; secretes epinephrine


a broad transverse nerve tract connecting the two cerebral hemispheres


any of the important motor nerves on each side of the central nervous system that run from the sensorimotor areas of the cortex through the brainstem to motor neurons of the cranial nerve nuclei and the ventral root of the spinal cord


anterior portion of the brain consisting of two hemispheres; dominant part of the brain in humans


a convex fold or elevation in the surface of the brain


either of two gyri on either side of the central sulcus


the convolution of the frontal lobe that is bounded in back by the central sulcus and that contains the motor area


the external surface of the body overlying the heart and stomach


the convolution of parietal lobe that is bounded in front by the central sulcus


(anatomy) a somewhat rounded subdivision of a bodily organ or part


that part of the cerebral cortex in either hemisphere of the brain lying directly behind the forehead


that part of the cerebral cortex in either hemisphere of the brain lying below the crown of the head


that part of the cerebral cortex in either hemisphere of the brain lying in the back of the head


oewn-striate_cortex-n oewn-striate_area-n oewn-first_visual_area-n oewn-area_17_of_Brodmann-n oewn-Brodmann-ap-s_area_17-n

the part of the occipital cortex that receives the fibers of the optic radiation from the lateral geniculate body and is the primary receptive area for vision


that part of the cerebral cortex in either hemisphere of the brain lying inside the temples of the head


lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata)

the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning


an almond-shaped neural structure in the anterior part of the temporal lobe of the cerebrum; intimately connected with the hypothalamus and the hippocampus and the cingulate gyrus; as part of the limbic system it plays an important role in motivation and emotional behavior


the anterior portion of the brain; the part of the brain that develops from the anterior part of the neural tube


a complex neural structure (shaped like a sea horse) consisting of grey matter and located on the floor of each lateral ventricle; intimately involved in motivation and emotion as part of the limbic system; has a central role in the formation of memories


a long curved structure on the medial surface of the cerebral hemispheres; the cortical part of the limbic system


the anterior division of the forebrain; the cerebrum and related parts of the hypothalamus


oewn-diencephalon-n oewn-interbrain-n oewn-betweenbrain-n oewn-thalmencephalon-n

the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon


any of several masses of subcortical grey matter at the base of each cerebral hemisphere that seem to be involved in the regulation of voluntary movement


a tail-shaped basal ganglion located in a lateral ventricle of the brain


a layer of grey matter in the brain adjacent to the lenticular nucleus


a basal ganglion shaped like a lens and including the outer reddish putamen and the inner pale yellow pallidum


the inner pale yellow part of the lenticular nucleus


the outer reddish part of the lenticular nucleus


an oval mass of grey matter located in the caudal part of the subthalamus; associated with the striate body


a system of functionally related neural structures in the brain that are involved in emotional behavior


large egg-shaped structures of grey matter that form the dorsal subdivision of the diencephalon


a basal part of the diencephalon governing autonomic nervous system


a striped mass of white and grey matter located in front of the thalamus in each cerebral hemisphere; consists of the caudate nucleus and the lenticular nucleus


a layer of deeply pigmented grey matter in the midbrain; associated with the striate body; is involved in metabolic disturbances associated with Parkinson's disease and with Huntington's disease


an essential visual center between the retina and the striate cortex


an essential auditory center in the midbrain


the posterior portion of the brain including cerebellum and brainstem


the posterior part of the hindbrain in developing vertebrates; forms the medulla oblongata in adults


a band of nerve fibers linking the medulla oblongata and the cerebellum with the midbrain


the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamus


any fine network (especially one in the body composed of cells or blood vessels)


any network of neurons or nuclei that function together to perform some function in the body


any histologically identifiable mass of neural cell bodies in the brain or spinal cord


a complex neural network in the central core of the brainstem; monitors the state of the body and functions in such processes as arousal and sleep and attention and muscle tone


the network in the reticular formation that serves an alerting or arousal function


one of four connected cavities in the brain; is continuous with the central canal of the spinal cord and contains cerebrospinal fluid


an irregular ventricle between the third ventricle and the central canal of the spinal cord


a narrow ventricle in the midplane below the corpus callosum; communicates with the fourth ventricle via the Sylvian aqueduct


either of two horseshoe-shaped ventricles one in each cerebral hemisphere; they communicate with the third ventricle via the foramen of Monro


a canal connecting the third and fourth ventricles


a radial arrangement of nerve fibers connecting different parts of the brain


a major part of the central nervous system which conducts sensory and motor nerve impulses to and from the brain; a long tubelike structure extending from the base of the brain through the vertebral canal to the upper lumbar region


clear liquid produced in the ventricles of the brain; fills and protects cavities in the brain and spinal cord


the section of the nervous system lying outside the brain and spinal cord


the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands


largest branch of the brachial plexus; extends down the humerus to the lateral epicondyle where it divides into one branch that goes to the skin on the back of the hand and another that goes to the underlying extensor muscles


originates in the thoracic regions of the spinal cord; opposes physiological effects of the parasympathetic: reduces digestive secretions; speeds the heart; contracts blood vessels


any of several nerves of the sympathetic part of the autonomic nervous system that innervate viscera and blood vessels


originates in the brain stem and lower part of the spinal cord; opposes physiological effects of the sympathetic nervous system: stimulates digestive secretions; slows the heart; constricts the pupils; dilates blood vessels


a network of nerves formed by cervical and thoracic spinal nerves and supplying the arm and parts of the shoulder


a plexus of nerves supplying the heart and nearby structures


a plexus of nerves surrounding the internal carotid artery


a nerve plexus lying beneath the sternocleidomastoid muscle


a vascular plexus of the cerebral ventricles that regulate intraventricular pressure


a small plexus formed by the fifth sacral and coccygeal nerves


a plexus of nerves serving the pelvic viscera


a plexus of nerves formed by the ventral branches of the first four lumbar nerves


a lymphatic plexus located along the lower portion of the aorta and iliac vessels


a nerve plexus formed by the ventral divisions of the coccygeal and sacral and lumbar nerves; supplies the lower limbs and perineum and coccygeal area


a plexus of unmyelinated fibers and postganglionic autonomic cell bodies in the muscular coat of the esophagus and stomach and intestines


an autonomic plexus that accompanies an artery


a plexus of veins draining the region of the pterygoid muscles and draining into the internal maxillary and anterior facial veins


one of two autonomic nerve plexuses in each lung


a nerve plexus formed by the 4th and 5th lumbar and 1st, 2nd, 3rd sacral nerves; supplies the pelvic region and lower limbs


oewn-solar_plexus-n oewn-coeliac_plexus-n oewn-plexus_celiacus-n oewn-abdominal_nerve_plexus-n

a large plexus of sympathetic nerves in the abdomen behind the stomach


a slight depression in the midline just below the sternum (where a blow can affect the solar plexus)


organs and tissues involved in the production and maturation of gametes and in their union and subsequent development as offspring


oewn-urogenital_system-n oewn-urogenital_apparatus-n oewn-urinary_system-n oewn-urinary_apparatus-n oewn-genitourinary_system-n oewn-genitourinary_apparatus-n oewn-systema_urogenitale-n oewn-apparatus_urogenitalis-n

the system that includes all organs involved in reproduction and in the formation and voidance of urine


the system for taking in oxygen and giving off carbon dioxide; in terrestrial animals this is accomplished by breathing


the passages through which air enters and leaves the body


a system of body parts that together serve some particular purpose


the organs and tubes involved in the production and excretion of urine


the vessels and tissue that carry or circulate fluids such as blood or lymph or sap through the body of an animal or plant


the organs and tissues involved in circulating blood and lymph through the body


the system of blood vessels and structures through which blood moves in a fetus


a distensible membranous sac (usually containing liquid or gas)


a membranous sac for temporary retention of urine


entrance or opening to a hollow organ or tube (especially the vaginal opening)


the orifice through which urine is discharged


either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladder


duct through which urine is discharged in most mammals and which serves as the male genital duct


any organ involved in sexual reproduction


oewn-genitalia-n oewn-genital_organ-n oewn-genitals-n oewn-private_parts-n oewn-privates-n oewn-crotch-n


human external genital organs collectively especially of a female


oewn-female_genitalia-n oewn-female_genitals-n oewn-female_genital_organ-n oewn-fanny-n

in England `fanny' is vulgar slang for female genitals


oewn-male_genitalia-n oewn-male_genitals-n oewn-male_genital_organ-n oewn-family_jewels-n


the reproductive glands of a man, comprising the ampullary, vesicular, prostate, bulbourethral, and urethral glands


(vertebrates) one of usually two organs that produce ova and secrete estrogen and progesterone


hermaphroditic gonad that contains both testicular and ovarian tissue


a structure resembling a bag in an animal


(radiology) organ intended to receive the therapeutic dose of a radioactive substance


(endocrinology) organ most affected by a particular hormone


one of the small sacs or saclike dilations in a compound gland


a small fluid-filled sac located between movable parts of the body especially at joints


a sac or cavity containing fluid especially lymph or cerebrospinal fluid


(anatomy) saclike structure in any of various animals (as a marsupial or gopher or pelican)


a membranous pouch inside the mouth of many rodents (as a gopher)


an external abdominal pouch in most marsupials where newborn offspring are suckled


the external pouch that contains the testes


a small anatomically normal sac or bladderlike structure (especially one containing fluid)


(pathology) an elevation of the skin filled with serous fluid


any small spherical group of cells containing a cavity


a small tubular cavity containing the root of a hair; small muscles and sebaceous glands are associated with them


a vascular body in a mammalian ovary enclosing a developing egg


yellow endocrine tissue that forms in a ruptured Graafian follicle following the release of an ovum; it degenerates after a few days unless pregnancy has begun


either of a pair of tubes conducting the egg from the ovary to the uterus


a hollow muscular organ in the pelvic cavity of females; contains the developing fetus


the space inside the uterus between the cervical canal and the Fallopian tubes


a spindle-shaped canal extending from the uterus to the vagina


the epithelial tissue of the endometrium


(pregnancy) the mucous membrane that lines the uterus; thickens under hormonal control and (if pregnancy does not occur) is shed in menstruation; if pregnancy occurs it is shed along with the placenta at parturition


the smooth muscle forming the wall of the uterus


an artificially made microscopic vesicle into which nucleic acids can be packaged; used in molecular biology as a transducing vector


membranous duct connecting the fetus with the placenta


the vascular structure in the uterus of most mammals providing oxygen and nutrients for and transferring wastes from the developing fetus


the placenta and fetal membranes that are expelled from the uterus after the baby is born


the lower part of the female reproductive tract; a moist canal in female mammals extending from the labia minora to the uterus

the vagina receives the penis during coitus


oewn-cunt-n oewn-puss-n oewn-pussy-n oewn-slit-n oewn-snatch-n oewn-twat-n


a fold of tissue that partly covers the entrance to the vagina of a virgin


hymen that is completely closed so that menstrual blood cannot flow out


a mound of fatty tissue covering the pubic area in women


a liplike structure that bounds a bodily orifice (especially any of the four labiate folds of a woman's vulva)


oewn-pudendal_cleft-n oewn-urogenital_cleft-n oewn-rima_pudendi-n oewn-rima_vulvae-n oewn-pudendal_cleavage-n oewn-pudendal_slit-n oewn-vulvar_slit-n


the space between the labia minora containing the orifice of the urethra


a female sexual organ homologous to the penis


either of two glands that discharge a component of seminal fluid into the urethra; homologous to Bartholin's gland in the female


either of the two posterior vestibular glands that secrete a lubricating mucus; homologous to Cowper's gland in the male


mucus-secreting glands in the mucosa of the uterine cervix


any of the numerous long convoluted tubules in the testis which are the sites where spermatozoa mature


a gland in which gametes (sex cells) are produced


oewn-testis-n oewn-testicle-n oewn-orchis-n oewn-ball-n oewn-ballock-n oewn-bollock-n oewn-nut-n oewn-egg-n

one of the two male reproductive glands that produce spermatozoa and secrete androgens

she kicked him in the balls and got away


a testis that fails to move into the scrotum as the male fetus develops

undescended testicles have an increased risk for cancer


a convoluted tubule in each testis; carries sperm to vas deferens


network of tubules carrying sperm from the seminiferous tubules to the vasa efferentia


the several highly convoluted tubules that lead from the rete testis to the vas deferens and form the head of the epididymis


a duct that carries spermatozoa from the epididymis to the ejaculatory duct


oewn-cock-n oewn-prick-n oewn-dick-n oewn-shaft-n oewn-pecker-n oewn-tool-n oewn-putz-n


a fold of skin covering the tip of the penis


a fold of skin covering the tip of the clitoris


a part of the seminal duct formed by the duct from the seminal vesicle and the vas deferens; passes through the prostate gland


either of a pair of glands located on either side of the male urinary bladder that open into the vas deferens and that secrete many components of semen during ejaculation


a structure resembling a cord that suspends the testis within the scrotum and contains the vas deferens and other vessels and nerves


any organ involved in the process of respiration


organ in many arachnids containing many thin folds of membrane resembling the leaves of a book


a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways


either of the two cavities lying between the floor of the cranium and the roof of the mouth and extending from the face to the pharynx


cavity forming the upper part of the pharynx


cavity formed by the pharynx at the back of the mouth


oewn-pharyngeal_tonsil-n oewn-adenoid-n oewn-Luschka-ap-s_tonsil-n oewn-third_tonsil-n oewn-tonsilla_pharyngealis-n oewn-tonsilla_adenoidea-n

a collection of lymphatic tissue in the throat behind the uvula (on the posterior wall and roof of the nasopharynx)

hypertrophy of the pharyngeal tonsils is called adenoids


a cartilaginous structure at the top of the trachea; contains elastic vocal cords that are the source of the vocal tone in speech


either of two small cartilages at the back of the larynx to which the vocal folds are attached


oewn-vocal_cord-n oewn-vocal_fold-n oewn-vocal_band-n oewn-plica_vocalis-n

either of two pairs of folds of mucous membrane projecting into the larynx


oewn-false_vocal_cord-n oewn-false_vocal_fold-n oewn-superior_vocal_cord-n oewn-ventricular_fold-n oewn-vestibular_fold-n

either of the upper two vocal cords that are not involved in vocalization


oewn-true_vocal_cord-n oewn-true_vocal_fold-n oewn-inferior_vocal_cord-n oewn-inferior_vocal_fold-n

either of the two lower vocal folds that come together to form the glottis; produce a vocal tone when they are approximated and air from the lungs passes between them


either of the two main branches of the trachea


any of the smallest bronchial ducts; ending in alveoli


membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi


one of the tubules forming the respiratory system of most insects and many arachnids


oewn-alimentary_canal-n oewn-alimentary_tract-n oewn-digestive_tube-n oewn-digestive_tract-n oewn-gastrointestinal_tract-n oewn-GI_tract-n

tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination


the alimentary canal (especially of an embryo or a coelenterate)


any gland having ducts that pour secretions into the digestive tract


any of three pairs of glands in the mouth and digestive system that secrete saliva for digestion


a large salivary gland that produces 50% of daytime saliva; in human beings it is located in front of and below each ear


a small salivary gland that produces mucin (the viscous component of saliva); in human beings it is located on either side of the mouth under the tongue


oewn-submaxillary_gland-n oewn-submaxillary_salivary_gland-n oewn-submandibular_gland-n oewn-submandibular_salivary_gland-n oewn-mandibular_gland-n

a salivary gland inside the lower jaw on either side that produces most of the nocturnal saliva; discharges saliva into the mouth under the tongue


oewn-esophagus-n oewn-oesophagus-n oewn-gorge-n oewn-gullet-n

the passage between the pharynx and the stomach


the short part of the esophagus extending downward from the diaphragm to the stomach


the part of the alimentary canal between the stomach and the anus


the caudal part of the alimentary canal in vertebrate embryos


the longest part of the alimentary canal; where digestion is completed


the part of the small intestine between the stomach and the jejunum


a small circular opening between the stomach and the duodenum


the part of the small intestine between the duodenum and the ileum


the part of the small intestine between the jejunum and the cecum


beginning with the cecum and ending with the rectum; includes the cecum and the colon and the rectum; extracts moisture from food residues which are later excreted as feces


the part of the large intestine between the cecum and the rectum; it extracts moisture from food residues before they are excreted


an abnormal enlargement of the colon; can be congenital (as in Hirschsprung's disease) or acquired (as when children refuse to defecate)


the cavity in which the large intestine begins and into which the ileum opens

the appendix is an offshoot of the cecum


valve between the ileum of the small intestine and the cecum of the large intestine; prevents material from flowing back from the large to the small intestine


the part of the large intestine that extends across the abdominal cavity and joins the ascending to the descending colon


the part of the large intestine that ascends from the cecum to the transverse colon


the part of the large intestine that descends from the transverse colon to the sigmoid colon


the s-shaped curve between the descending colon and the rectum


oewn-appendix-n oewn-vermiform_appendix-n oewn-vermiform_process-n oewn-cecal_appendage-n

a vestigial process that extends from the lower end of the cecum and that resembles a small pouch


the terminal section of the alimentary canal; from the sigmoid flexure to the anus


the excretory opening at the end of the alimentary canal


oewn-arse-n oewn-arsehole-n oewn-asshole-n oewn-bunghole-n


a congenital defect of the anus; there is partial or complete obstruction of the anal opening


the general region between the anus and the genital organs


the upper part of the human body or the front part of the body in animals; contains the face and brains


oewn-attic-n oewn-bean-n oewn-bonce-n oewn-noodle-n oewn-noggin-n oewn-dome-n


the shaved crown of a monk's or priest's head


the muscle and aponeurosis and skin covering the cranium


the skin that covers the top of the head

they wanted to take his scalp as a trophy


the bony skeleton of the head of vertebrates


the part of the skull that encloses the brain


the front part of the head or skull (including the forehead)


the large cranial bone forming the front part of the cranium: includes the upper part of the orbits


either prominence of the frontal bone above each orbit


either of two skull bones between the frontal and occipital bones and forming the top and sides of the cranium


a saucer-shaped membrane bone that forms the back of the skull


prominence on the outer surface of the occipital bone


oewn-mastoid-n oewn-mastoid_process-n oewn-mastoid_bone-n oewn-mastoidal-n

process of the temporal bone behind the ear at the base of the skull


extends from the base of the temporal bone


two bony processes descending from the body of the sphenoid bone


a protuberance on a bone especially for attachment of a muscle or ligament


an immovable joint (especially between the bones of the skull)


a joint so articulated as to move freely


corresponds to the bregma when bones have ossified


oewn-sphenoid_fontanelle-n oewn-sphenoid_fontanel-n oewn-sphenoidal_fontanelle-n oewn-sphenoidal_fontanel-n

the irregularly shaped area on either side of the cranium where the frontal bone and the anterior tip of the parietal bone and the temporal bone and the greater wing of the sphenoid bone meet; corresponds to the pterion when bones have ossified


the suture between the parietal and frontal bones of the skull


the suture between two halves of the frontal bone (usually obliterated by the age of 6)


the suture between the two maxillae of the upper jawbone


the suture between the occipital and parietal bones


the suture between the occipital and the temporal bones; a continuation of the lamboid suture


the suture between the parietal and the temporal bones


the suture uniting the two parietal bones


any membranous gap between the bones of the cranium in an infant or fetus


a natural opening or perforation through a bone or a membranous structure


the small opening (on both the right and left sides) that connects the third ventricle in the diencephalon with the lateral ventricle in the cerebral hemisphere


the large opening at the base of the cranium through which the spinal cord passes


the part of the skull of a vertebrate that frames the mouth and holds the teeth


a slender process of the temporal bone that strengthens the zygomatic arch


the part of an organism (human or animal) that connects the head to the rest of the body


an external body part consisting of feathers or hair about the neck of a bird or other animal


(paleontology) a bony plate that curves upward behind the skull of many ceratopsian dinosaurs


the passage to the stomach and lungs; in the front part of the neck below the chin and above the collarbone


the passage between the back of the mouth and the pharynx


an abnormal passage leading from a suppurating cavity to the body surface


a surgically created shunt (usually around a damaged part)


shunt that is created surgically between the portal vein and the inferior vena cava so that blood from the abdominal organs can bypass the liver


a passage by which a bodily fluid (especially blood) is diverted from one channel to another


the part of the body between the neck and the upper arm


a ball-and-socket joint between the head of the humerus and a cavity of the scapula


a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm


oewn-armpit-n oewn-axilla-n oewn-axillary_cavity-n oewn-axillary_fossa-n

the hollow under the arm where it is joined to the shoulder


the body excluding the head and neck and limbs

they moved their arms and legs and bodies


oewn-anterior_serratus_muscle-n oewn-serratus_anterior-n oewn-musculus_serratus_anterior-n oewn-serratus_magnus-n

muscles that rotate the scapula and elevate the rib cage


skeletal muscle that draws the rib cage backward and downward


a thin quadrilateral muscle at the junction of the thoracic and lumbar regions; acts to counteract the pull of the diaphragm on the ribs to which it is attached


a thin quadrilateral muscle of the upper and dorsal part of the thorax; acts to elevate the upper ribs


oewn-pectoral-n oewn-pectoral_muscle-n oewn-pectoralis-n oewn-musculus_pectoralis-n oewn-pecs-n

either of two large muscles of the chest


a skeletal muscle that adducts and rotates the arm


a skeletal muscle that draws down the scapula or raises the ribs


muscles between the ribs; they contract during inspiration


any skeletal muscle that draws a body part down


the part of the human torso between the neck and the diaphragm or the corresponding part in other vertebrates


the cavity in the vertebrate body enclosed by the ribs between the diaphragm and the neck and containing the lungs and heart


the front of the trunk from the neck to the abdomen


the middle region of the body of an arthropod between the head and the abdomen


the line formed by a groove between two parts (especially the separation between a woman's breasts)


ducts of the mammary gland that carry milk to the nipple


oewn-breast-n oewn-bosom-n oewn-knocker-n oewn-boob-n oewn-tit-n oewn-titty-n

either of two soft fleshy milk-secreting glandular organs on the chest of a woman


oewn-nipple-n oewn-mammilla-n oewn-mamilla-n oewn-pap-n oewn-teat-n oewn-tit-n


small circular area such as that around the human nipple or an inflamed area around a pimple or insect bite


small space in a tissue or body part such as the area between veins on a leaf or an insect's wing


one of many small glands of the uterine cervix that secrete mucus


a gland that opens into the vestibule of the vagina; secretions lubricate the vagina during coitus


the middle area of the human torso (usually in front)

young American women believe that a bare midriff is fashionable


the narrowing of the body between the ribs and hips


oewn-pot-n oewn-potbelly-n oewn-bay_window-n oewn-corporation-n oewn-tummy-n


either side of the body below the waist and above the thigh


the hip and buttock and upper thigh in human beings


oewn-navel-n oewn-umbilicus-n oewn-bellybutton-n oewn-belly_button-n oewn-omphalos-n oewn-omphalus-n

a scar where the umbilical cord was attached

you were not supposed to show your navel on television


oewn-abdomen-n oewn-venter-n oewn-stomach-n oewn-belly-n

the region of the body of a vertebrate between the thorax and the pelvis


the back of the body of a vertebrate or any analogous surface (as the upper or outer surface of an organ or appendage or part)


the soft belly or underside of an animal's body


a diagonally arranged abdominal muscle on either side of the torso


a flat muscle with transverse fibers that forms the anterior and lateral walls of the abdominal cavity


the cavity containing the major viscera; in mammals it is separated from the thorax by the diaphragm


the lower part of the abdomen just above the external genital organs


the posterior part of a human (or animal) body from the neck to the end of the spine


a broad flat muscle on either side of the back


oewn-buttocks-n oewn-nates-n oewn-arse-n oewn-butt-n oewn-backside-n oewn-bum-n oewn-buns-n oewn-can-n oewn-fundament-n oewn-hindquarters-n oewn-hind_end-n oewn-keister-n oewn-posterior-n oewn-prat-n oewn-rear-n oewn-rear_end-n oewn-rump-n oewn-stern-n oewn-seat-n oewn-tail-n oewn-tail_end-n oewn-tooshie-n oewn-tush-n oewn-bottom-n oewn-behind-n oewn-derriere-n oewn-fanny-n oewn-ass-n

the fleshy part of the human body that you sit on


either of the two large fleshy masses of muscular tissue that form the human rump


an external body part that projects from the body

it is important to keep the extremities warm


one of the jointed appendages of an animal used for locomotion or grasping: arm, leg, wing, flipper


the part of a limb or tooth that remains after the rest is removed


a human limb; commonly used to refer to a whole limb but technically only the part of the limb between the knee and ankle


a structure in animals that is similar to a human leg and used for locomotion


oewn-bowleg-n oewn-bow_leg-n oewn-bandyleg-n oewn-bandy_leg-n oewn-genu_varum-n oewn-tibia_vara-n

a leg bowed outward at the knee (or below the knee)


oewn-shank-ap-s_mare-n oewn-shanks-ap-_mare-n oewn-shank-ap-s_pony-n oewn-shanks-ap-_pony-n


the part of the leg between the hip and the knee


the upper side of the thighs of a seated person

he picked up the little girl and plopped her down in his lap


the part of the human leg between the knee and the ankle


the front part of the human leg between the knee and the ankle


the extremity of the limb in vertebrates


the part of the leg of a human being below the ankle joint

his bare feet projected from his trousers


a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb


the arm from the elbow to the fingertips


the part of the superior limb between the elbow and the wrist


oewn-hand-n oewn-manus-n oewn-mitt-n oewn-paw-n

the (prehensile) extremity of the superior limb


a hand with the fingers clenched in the palm (as for hitting)


the hand that is on the right side of the body

he writes with his right hand but pitches with his left


the hand that is on the left side of the body


the inner surface of the hand from the wrist to the base of the fingers


the fleshy area of the palm at the base of the thumb


a finger or toe in human beings or corresponding body part in other vertebrates


the fifth digit; the little finger or little toe


any of the terminal members of the hand (sometimes excepting the thumb)


that part of a limb that is farthest from the torso


the thick short innermost digit of the forelimb


the third finger (especially of the left hand)


the second finger; between the index finger and the ring finger


arises from the sacral plexus and passes about halfway down the thigh where it divides into the common peroneal and tibial nerves


one of a pair of nerves that originate from lumbar nerves and supply the muscles and skin of the anterior part of the thigh


a branch of the femoral nerve that supplies cutaneous branches to the inner aspect of the leg and foot


one of a pair of nerves that arises from cervical spinal roots and passes down the thorax to innervate the diaphragm and control breathing


a nerve running along the inner side of the arm and passing near the elbow; supplies intrinsic muscles of the hand and the skin of the medial side of the hand


any of the 31 pairs of nerves emerging from each side of the spinal cord (each attached to the cord by two roots: ventral and dorsal)


any of eight pairs of spinal nerves emerging from the cervical section of the spinal cord


any of five pairs of spinal nerves emerging from the lumbar section of the spinal cord


any of five pairs of spinal nerves emerging from the sacral region of the spinal cord


any of twelve pairs of spinal nerves emerging from the thoracic region of the spinal cord


oewn-gluteus-n oewn-gluteus_muscle-n oewn-gluteal_muscle-n oewn-glute-n

any one of three large skeletal muscles that form the buttock and move the thigh


the outermost of the three gluteal muscles


the innermost of the three gluteal muscles


one of the tendons at the back of the knee


a ring of muscle that contracts to close an opening


the valve between the distal end of the esophagus and the stomach; the physiological sphincter at the esophagogastric junction


the junction between the esophagus and the stomach epithelium


a sphincter that is not recognizable at autopsy because its resting arrangement cannot be distinguished from adjacent tissue


an external ring of striated muscle surrounding the anus


an internal ring of smooth muscle formed by circular fibers of the rectum


a striated sphincter muscle that constricts the urethra


the sphincter muscle of the urinary bladder; made up of a thickened muscular layer of bladder around the urethral opening


the smooth muscle sphincter of the common bile duct


the smooth muscle sphincter of the main pancreatic duct


a ring of smooth muscle surrounding the iris


the sphincter muscle of the pylorus that separates the stomach from the duodenum


any of several muscles that cause an attached structure to become tense or firm


a small muscle in the middle ear that tenses to protect the eardrum


oewn-knee-n oewn-knee_joint-n oewn-human_knee-n oewn-articulatio_genus-n oewn-genu-n

hinge joint in the human leg connecting the tibia and fibula with the femur and protected in front by the patella


the longest and thickest bone of the human skeleton; extends from the pelvis to the knee


one of the bony prominences developed near the upper extremity of the femur to which muscles are attached


the middle of the calf; half way between the knee and ankle


the muscle in the back part of the leg that forms the greater part of the calf; responsible for the plantar flexion of the foot


either of two muscles of the abdomen and pelvis that flex the trunk and rotate the thigh


any of several muscles of the upper back that help move the shoulder blade


rhomboid muscle that draws the scapula toward the spinal column


rhomboid muscle that draws the scapula toward the vertebral column and slightly upward


a broad flat muscle in the calf of the leg under the gastrocnemius muscle


either of two flat muscles that extend from the upper vertebrae to the base of the skull and serve to rotate or flex or extend the head and neck


muscle of the lower leg that is involved in moving the foot


muscle descending from the sphenoid bone to the lower jaw


a more or less rounded anatomical body or mass


a foot afflicted with a fallen arch; abnormally flattened and spread out


a curved bony structure supporting or enclosing organs (especially the inner sides of the feet)


the short lateral arch formed by the heads of the metatarsals


an instep flattened so the entire sole rests on the ground


a deformed toe which is bent in a clawlike arch


a freely moving joint in which the articulations allow only gliding motions


oewn-ankle-n oewn-ankle_joint-n oewn-mortise_joint-n oewn-articulatio_talocruralis-n

a gliding joint between the distal ends of the tibia and fibula and the proximal end of the talus


a large tendon that runs from the heel to the calf


the biceps muscle of the thigh; it flexes the knee and rotates the leg laterally


any skeletal muscle having two origins (but especially the muscle that flexes the forearm)


a muscle that flexes and supinates the forearm


any skeletal muscle having three origins (but especially the triceps brachii)


the skeletal muscle having three origins that extends the forearm when it contracts


oewn-elbow-n oewn-elbow_joint-n oewn-human_elbow-n oewn-cubitus-n oewn-cubital_joint-n oewn-articulatio_cubiti-n

hinge joint between the forearm and upper arm and the corresponding joint in the forelimb of a quadruped


any of the joints between the phalanges of the fingers or toes


a freely moving joint in which the bones are so articulated as to allow extensive movement in one plane


a point on the elbow where the ulnar nerve passes near the surface; a sharp tingling sensation results when the nerve is knocked against the bone


a thin plate or layer (especially of bone or mineral)


lamina of the vertebral arch; the flattened posterior part of the vertebral arch from which the spinous process extends


any flat platelike body structure or part


any rigid body structure composed primarily of keratin


horny plate covering and protecting part of the dorsal surface of the digits


the dead skin at the base of a fingernail or toenail


the crescent-shaped area at the base of the human fingernail


the formative tissue at the base of a nail


the body substance in which tissue cells are embedded


a sheet or band of fibrous connective tissue separating or binding together muscles and organs etc


any of the deeper and thicker fascia that attach muscles to bones; resemble flattened tendons


(surgery) tissue or organ transplanted from a donor to a recipient; in some cases the patient can be both donor and recipient


tissue that is taken from one site and grafted to another site on the same person

When fractures fail to unite, autografts of bone can be extremely valuable in helping the bone to heal.


tissue or organ transplanted from a donor of the same species but different genetic makeup; recipient's immune system must be suppressed to prevent rejection of the graft


tissue from an animal of one species used as a temporary graft (as in cases of severe burns) on an individual of another species


the connective tissue that forms a scar; consists of fibroblasts in new scars and collagen fibers in old scars


a fibrous band of scar tissue that binds together normally separate anatomical structures


the supporting tissue of an organ (as opposed to parenchyma)


toenail having its free tip or edges embedded in the surrounding flesh


a loose narrow strip of skin near the base of a fingernail; tearing it produces a painful sore that is easily infected


oewn-wrist-n oewn-carpus-n oewn-wrist_joint-n oewn-radiocarpal_joint-n oewn-articulatio_radiocarpea-n

a joint between the distal end of the radius and the proximal row of carpal bones


a joint of a finger when the fist is closed


oewn-skeletal_system-n oewn-skeleton-n oewn-frame-n oewn-systema_skeletale-n

the hard structure (bones and cartilages) that provides a frame for the body of an animal


any structure created by the skeleton of an organism


any tubular or pillar-like supporting structure in the body


a skeletal support to which the forelimbs of vertebrates are attached


the bony arch formed by the collarbones and shoulder blades in humans


the internal skeleton; bony and cartilaginous structure (especially of vertebrates)


the exterior protective or supporting structure or shell of many animals (especially invertebrates) including bony or horny parts such as nails or scales or hoofs


the part of the skeleton that includes the pectoral girdle and the pelvic girdle and the upper and lower limbs


the part of the skeleton that includes the skull and spinal column and sternum and ribs


one of two processes that extend from each vertebra and provide the point of articulation for the ribs


a structure arising ventrally from a vertebral centrum and enclosing the caudal blood vessels


a structure arising dorsally from a vertebral centrum and enclosing the spinal cord


oewn-spinal_column-n oewn-vertebral_column-n oewn-spine-n oewn-backbone-n oewn-back-n oewn-rachis-n

the series of vertebrae forming the axis of the skeleton and protecting the spinal cord


one of 7 vertebrae in the human spine located in the neck region


the 2nd cervical vertebra; serves as a pivot for turning the head


a toothlike process at the back of 2nd vertebra of the neck


one of 12 vertebrae in the human vertebral column; thoracic vertebrae extend from the seventh cervical vertebra down to the first lumbar vertebra


one of 5 vertebrae in the human vertebral column; lumbar vertebrae extend from the twelfth thoracic vertebra down to the sacral vertebrae


one of 5 vertebrae in the human spine that fuse in the adult to form the sacrum


a muscle in the thigh that helps to rotate the leg into the sitting position assumed by a tailor; the longest muscle in the human body


any of four pairs of muscles extending from the cervical vertebrae to the second rib; involved in moving the neck and in breathing


either of two roots of the spinal nerves


one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone; turns head obliquely to the opposite side; when acting together they flex the neck and extend the head


either of two muscles in the shoulder region that move the shoulders and arms


teres muscle that moves the arm and rotates it medially


teres muscle that adducts the arm and rotates it laterally


either of two skeletal muscle in each leg arising from the tibia; provides for movement of the foot


a muscle running from the tibia to the first metatarsal and cuneiform bones


oewn-trapezius-n oewn-trapezius_muscle-n oewn-cowl_muscle-n oewn-musculus_trapezius-n

either of two flat triangular muscles of the shoulder and upper back that are involved in moving the shoulders and arms


one of the first seven ribs in a human being which attach to the sternum


a riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing)


the cartilages that connect the sternum and the ends of the ribs; its elasticity allows the chest to move in respiration


the end of a long bone; initially separated from the main bone by a layer of cartilage that eventually ossifies so the parts become fused


the growing part of a long bone between the diaphysis and the epiphysis


bone extending from the shoulder to the elbow


the outer and slightly shorter of the two bones of the human forearm


the inner and longer of the two bones of the human forearm


process of the ulna that forms the outer bump of the elbow and fits into the fossa of the humerus when the arm is extended


the part of the hand between the carpus and phalanges


the outer and thinner of the two bones of the human leg between the knee and ankle


oewn-tibia-n oewn-shinbone-n oewn-shin_bone-n oewn-shin-n

the inner and thicker of the two bones of the human leg between the knee and ankle


the skeleton of the human foot between the toes and the tarsus; the corresponding part of the foot in birds or of the hind foot in quadrupeds


the part of the foot of a vertebrate between the metatarsus and the leg; in human beings the bones of the ankle and heel collectively


(anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion)


oewn-ball-and-socket_joint-n oewn-spheroid_joint-n oewn-cotyloid_joint-n oewn-enarthrodial_joint-n oewn-enarthrosis-n oewn-articulatio_spheroidea-n

a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone


the rounded end of a bone that fits into a rounded cavity in another bone to form a joint


oewn-hip-n oewn-hip_joint-n oewn-coxa-n oewn-articulatio_coxae-n

the ball-and-socket joint between the head of the femur and the acetabulum


the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint


a structure shaped like a funnel in the outlet of the kidney into which urine is discharged before passing into the ureter


oewn-pelvis-n oewn-pelvic_girdle-n oewn-pelvic_arch-n oewn-hip-n

the structure of the vertebrate skeleton supporting the lower limbs in humans and the hind limbs or corresponding parts in other vertebrates


the space bounded by the bones of the pelvis and containing the pelvic viscera


oewn-pivot_joint-n oewn-rotary_joint-n oewn-rotatory_joint-n oewn-articulatio_trochoidea-n

a freely moving joint in which movement is limited to rotation

the articulation of the radius and ulna in the arm is a pivot joint


the angle formed by the inner sides of the legs where they join the human trunk


the region of the hips and groin and lower abdomen


the crease at the junction of the inner part of the thigh with the trunk together with the adjacent region and often including the external genitals


any area of the body that is highly sensitive to pain (as the flesh underneath the skin or a fingernail or toenail)


the organ of smell and entrance to the respiratory tract; the prominent part of the face of man or other mammals


oewn-beak-n oewn-honker-n oewn-hooter-n oewn-nozzle-n oewn-snoot-n oewn-snout-n oewn-schnozzle-n oewn-schnoz-n


a nose curved downward like the beak of a hawk


the human nose (especially when it is large)


the hard ridge that forms the upper part of the nose

her glasses left marks on the bridge of her nose


a short nose; flattened and turned up at the end


a nose with a prominent slightly aquiline bridge


a small natural hollow in the cheek or chin


either one of the two external openings to the nasal cavity in the nose


either one of the two posterior openings at the back of the nasal cavity leading to the nasopharynx


any of the openings to the nasal cavities that allow air to flow through the cavities to the pharynx


the front of the human head from the forehead to the chin and ear to ear


the part of an animal corresponding to the human face


oewn-countenance-n oewn-physiognomy-n oewn-phiz-n oewn-visage-n oewn-kisser-n oewn-smiler-n oewn-mug-n

the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British)


the characteristic parts of a person's face: eyes and nose and mouth and chin

an expression of pleasure crossed his features


oewn-temporalis_muscle-n oewn-temporal_muscle-n oewn-temporalis-n oewn-musculus_temporalis-n

muscle extending from the temporal fossa to the coronoid process of the mandible; acts to raise the mandible and close the jaws


the flat area on either side of the forehead


a fullness and looseness of the flesh of the lower cheek and jaw (characteristic of aging)


the bones of the skull that frame the mouth and serve to open it; the bones that hold the teeth


any long raised border or margin of a bone or tooth or membrane


oewn-supraorbital_ridge-n oewn-supraorbital_torus-n oewn-superciliary_ridge-n oewn-superciliary_arch-n

a ridge on the frontal bone above the eye socket


(pathology) an abnormal outgrowth or enlargement of some part of the body


an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart)


the remains of a body part that was functional at an earlier stage of life

Meckel's diverticulum is the rudiment of the embryonic yolk sac


(anatomy) a layer (a lining or membrane) that encloses a structure


(Middle Ages) one of the four fluids in the body whose balance was believed to determine your emotional and physical state

the humors are blood and phlegm and yellow and black bile


a supporting structure of the shoulder consisting of the muscles and tendons that attach the arm to the shoulder joint and enable the arm to move


the center in the medulla oblongata and pons that integrates sensory information about the level of oxygen and carbon dioxide in the blood and determines the signals to be sent to the respiratory muscles


(biology) tiny fibers that are seen in cell division; the fibers radiate from two poles and meet at the equator in the middle

chromosomes are distributed by spindles in mitosis and meiosis


a mass of cytoplasm containing several nuclei and enclosed in a membrane but no internal cell boundaries (as in muscle fibers)


a thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluid


a thin membrane in synovial (freely moving) joints that lines the joint capsule and secretes synovial fluid


an enveloping or covering membrane or layer of body tissue


a cavity in the mesoderm of an embryo that gives rise in humans to the pleural cavity and pericardial cavity and peritoneal cavity


(anatomy) any structure that resembles a horn in shape


(anatomy) any structure that resembles a crown in shape


(anatomy) a fold of dura mater that covers the cerebellum and supports the occipital lobes of the cerebrum


a large connective tissue cell that contains histamine and heparin and serotonin which are released in allergic reactions or in response to injury or inflammation


an undifferentiated cell whose daughter cells may differentiate into other cell types (such as blood cells)


blood forming stem cells in the bone marrow; T cells and B cells arise from these stem cells


any cell that has a specific receptor for an antigen or antibody or hormone or drug, or is the focus of contact by a virus or phagocyte or nerve fiber etc.


a point one third of the way along a line drawn from the hip to the umbilicus; the point of maximum sensitivity in acute appendicitis


thick membrane around the mammalian ovum; can be penetrated by one sperm in the fertilization process; usually remains around the fertilized egg until it is implanted in the wall of the uterus


a cellular structure that is postulated to exist in order to mediate between a chemical agent that acts on nervous tissue and the physiological response


receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles)


receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasodilation and increased heart beat)


a small recess in the wall of the pharynx


a narrow elongated opening or fissure between two symmetrical parts


oewn-rima_glottidis-n oewn-rima_vocalis-n oewn-true_glottis-n oewn-glottis_vera-n

the space between the two true vocal folds


oewn-rima_vestibuli-n oewn-rima_respiratoria-n oewn-false_glottis-n oewn-glottis_spuria-n

the opening between the false vocal folds


either (free) end of a eukaryotic chromosome

telomeres act as caps to keep the sticky ends of chromosomes from randomly clumping together


thin trapezoidal bone of the skull forming the posterior and inferior parts of the nasal septum


any of the tiny soft bones found in the sutures between cranial bones


(anatomy) any encircling or beltlike structure


lock of hair in the shape of a spiral or curl


either one of the two posterior openings at the back of the nasal cavity leading to the nasopharynx


An immunologically specific substance produced by animal sperm to implement attraction by the egg before fertilization.


a process projecting from the vertebra that attaches muscles and ligaments.

Spinous processes are exaggerated in some animals, such as the extinct Dimetrodon and Spinosaurus, where they form a sailback or finback.


The seventh permanent tooth located in the upper and lower jaw on either side.

The dentist told me there's a cavity in my second molar.


A thin lamina of elastic cartilage forming the central portion of the epiglottis.


An epistatic gene is a gene that determines whether or not a given trait will be expressed.

The gene responsible for albinism is an epistatic gene.


Any of the long, thin, microscopic fibrils that run through the body of a neuron and extend into the axon and dendrites, giving the neuron support and shape.

The term neurofibril refers to a bundle of neurofilaments.


A modified part of the ovary that in many flatworms and rotifers produces yolk-filled cells serving to nourish the true eggs.


The fleshy hanging upper lip of a bloodhound or similar dog.

The loose flaps of skin on the sides of the upper muzzle that hang to different lengths over the mouth are called flews.


Either utricle or saccule in the inner ear of vertebrates.


A maxillary palpus is a small several-segmented process on the outer aspect of each maxilla of an insect that is believed to have a sensory function.


A labial palpus is either of the jointed appendages on the front of the mentum of an insect.


Any of various muscles that retract an organ or a body part.

The retractor muscle contracts to retract the penis into the sheath and relaxes to allow the penis to extend from the sheath.


the final section of the aortic arch; a narrowing of the aorta as a result of decreased blood flow when in foetal life.


a sugar-rich sticky liquid, secreted by aphids and some scale insects as they feed on plant sap.

Honeydew is collected by certain species of birds, wasps, stingless bees and honey bees, which process it into a dark, strong honey (honeydew honey).


one of the four quantities that are the basis of systems of measurement


a system of related measures that facilitates the quantification of some particular characteristic


system of measurement for length and weight and duration


a system of weights and measures based on the foot and pound and second and pint


a decimal system of weights and measures based on the meter and the kilogram and the second


system of measurement based on centimeters and grams and seconds


oewn-Systeme_International_d-ap-Unites-n oewn-Systeme_International-n oewn-SI_system-n oewn-SI-n oewn-SI_unit-n oewn-International_System_of_Units-n oewn-International_System-n

a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela)

Today the United States is the only country in the world not totally committed to the Systeme International d'Unites


the system of weights and measures based on the foot and pound and second and pint that dates back to colonial America but differs in some respects from the British Imperial System; today in the United States this system exists side by side with the SI system


a system of graduating sizes of type in multiples of the point


a system of measurement of information based on the probabilities of the events that convey information


a data transmission rate; the maximum amount of information (bits/second) that can be transmitted along a channel


(computer science) a data transmission rate (bits/second) for modems


the amount of wood in an area as measured in cords


a measure of the antiknock properties of gasoline


(economics) a measure that is to be maximized in any situation involving choice


(economics) the amount that utility increases with an increase of one unit of an economic good or service


an adequate quantity; a quantity that is large enough to achieve a purpose


(of a solution) concentration expressed in gram equivalents of solute per liter


(in an election with more than 2 options) the number of votes for the candidate or party receiving the greatest number (but less than half of the votes)


(chemistry) the amount of free acid present in fat as measured by the milligrams of potassium hydroxide needed to neutralize it

as the glycerides in fat slowly decompose the acid value increases


a measure of the quantity of chlorine or other halides in water (especially seawater)


a concept of quantity involving zero and units

every number has a unique position in the sequence


a quantity of paper; 480 or 500 sheets; one ream equals 20 quires


the quantity of a particular substance that can dissolve in a particular solvent (yielding a saturated solution)


the degree to which something is poisonous


the degree to which something is toxic to living cells


any division of quantity accepted as a standard of measurement or exchange

the dollar is the United States unit of currency


a unit of measurement for the fineness of silk or nylon or rayon

with an evening dress one wears 10 denier stockings


a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists


the unit of measurement for the proportion of gold in an alloy; 18-karat gold is 75% gold; 24-karat gold is pure gold


a number representing a quantity assumed to have a fixed value in a specified mathematical context


the number of molecules in a mole of a substance (approximately 602,250,000,000,000,000,000,000)


constant used in the calculation of the ideal gas constant


a constant number that serves as a measure of some property or characteristic


a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber

absorptance equals 1 minus transmittance


the ratio of the drag on a body moving through air to the product of the velocity and the surface area of the body


the ratio of the weight of an object being moved along a surface and the force that maintains contact between the object and the surface


a measure of the induction between two circuits; the ratio of the electromotive force in a circuit to the corresponding change of current in a neighboring circuit; usually measured in henries


the ratio of the electromotive force produced in a circuit by self-induction to the rate of change of current producing it, expressed in henries


(physics) a coefficient that expresses how much of a specified property is possessed by a specified substance


(physics) the ratio of the applied stress to the change in shape of an elastic body


the ratio of the change in pressure acting on a volume to the fractional change in volume


the coefficient of elasticity for a shearing force


a coefficient of elasticity applicable to the stretching of a wire


the fractional change in length or area or volume per unit change in temperature at a given constant pressure


oewn-coefficient_of_reflection-n oewn-reflection_factor-n oewn-reflectance-n oewn-reflectivity-n

the fraction of radiant energy that is reflected from a surface


the fraction of radiant energy that passes through a substance


a measure of the resistance to flow of a fluid under an applied force


(statistics) a coefficient assigned to elements of a frequency distribution in order to represent their relative importance


an arbitrary constant in the equations of general relativity theory


(chemistry) the ratio of concentrations when equilibrium is reached in a reversible reaction (when the rate of the forward reaction equals the rate of the reverse reaction)


the equilibrium constant for a reversible dissociation


(physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole


oewn-gravitational_constant-n oewn-universal_gravitational_constant-n oewn-constant_of_gravitation-n oewn-G-n

(physics) the universal constant relating force to mass and distance in Newton's law of gravitation


oewn-Hubble-ap-s_constant-n oewn-Hubble_constant-n oewn-Hubble-ap-s_parameter-n oewn-Hubble_parameter-n

(cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today


the charge on an ion is equal to a constant charge e multiplied by an integer from 1 to 15


the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second


the degree of oxidation of an atom or ion or molecule; for simple atoms or ions the oxidation number is equal to the ionic charge

the oxidation number of hydrogen is +1 and of oxygen is -2


(mathematics) the number of elements in a set or group (considered as a property of that grouping)


the number of red and white corpuscles in a blood sample


a count of troops killed in an operation or time period

the daily body count increased as the war went on


number of copies of a newspaper or magazine that are sold

by increasing its circulation the newspaper hoped to increase its advertising


(library science) the count of books that are loaned by a library over a specified period


the number of pollen grains (usually ragweed) in a standard volume of air over a twenty-four hour period and a specified time and place


the sperm count is used as an indicator of male fertility


any of the numbers (or symbols) that form a product when multiplied together


factor by which a quantity that is expressed in one set of units must be multiplied in order to convert it into another set of units


the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality


a natural number that has exactly two distinct natural number divisors: 1 and itself


the prime factors of a quantity are all of the prime quantities that will exactly divide the given quantity


an integer that has no integral factors but itself and 1


an integer that is divisible without remainder by at least one positive integer other than itself and one


a number that expresses the accomplishment of a team or an individual in a game or contest


(golf) the unit of scoring in golf is the act of hitting the ball with a club


(golf) a score of one stroke under par on a hole


(golf) a score of one stroke over par on a hole


(sports) the score by which a team or individual is losing


(golf) a score of two strokes over par for a hole


(cricket) a score of nothing by a batsman


(golf) a score of two strokes under par on a hole


(golf) a score of three strokes under par on a hole


(games) the score at a particular point or the score needed to win


(sports) the score by which a team or individual is winning


(golf) the standard number of strokes set for each hole on a golf course, or for the entire course


the number of wins versus losses and ties a team has had

at 9-0 they have the best record in their league


a quantity expressed in two different units

compound number such as 'one hour and ten minutes'


the number designating place in an ordered sequence


the number of elements in a mathematical set; denotes a quantity but not the order


(numeration system) the positive integer that is equivalent to one in the next higher counting place


a number represented in floating-point notation


a number represented in fixed-point notation


the number of observations in a given statistical category


a cardinal number represented as 1 followed by 100 zeros (ten raised to the power of a hundred)


a cardinal number represented as 1 followed by a googol of zeros (ten raised to the power of a googol)


the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element


the atomic number of an extra stable strongly bound atomic nucleus: 2, 8, 20, 28, 50, 82 or 126


a number equal to the difference between the number of baryons and the number of antibaryons in any subatomic structure; it is conserved in all types of particle interactions


all the salesmen met their quota for the month


the extent or degree to which something is magnetized


a measure of the strength of a magnetic field over a given area


oewn-volume_unit-n oewn-capacity_unit-n oewn-capacity_measure-n oewn-cubage_unit-n oewn-cubic_measure-n oewn-cubic_content_unit-n oewn-displacement_unit-n oewn-cubature_unit-n

a unit of measurement of volume or capacity


the volume equal to a cube one inch on each side


the volume equal to a cube one foot on each side


a unit of amount of wood cut for burning; 128 cubic feet


any of various systems of units for measuring electricity and magnetism


any unit for measuring the force of explosions


a decimal unit of measurement of the metric system (based on meters and kilograms and seconds)

convert all the measurements to metric units


the distance traveled in a vehicle powered by one gallon of gasoline or diesel fuel


(computer science) a unit for measuring the speed of a computer system, one megaflops is a million floating point operations per second


(computer science) a unit for measuring the speed of a computer system, with 1 teraflop being one trillion floating point operations per second


(computer science) a unit for measuring the execution speed of a computer's CPU (but not the whole system)

4 MIPS is 4,000,000 instructions per second


a system for measuring the concentration of sugar solutions


the unit of counting in scoring a game or contest


(tennis) the final point needed to win a set in tennis


(tennis) the final point needed to win a match (especially in tennis)


a unit of acoustic absorption equivalent to the absorption by a square foot of a surface that absorbs all incident sound


an angular unit used in artillery; equal to 1/6400 of a complete revolution


the treasure is 2 minutes and 45 seconds south of here


a unit of angular distance equal to a 60th of a degree


a unit of angular distance equal to one thousandth of a milliradian


a unit of angular distance equal to one thousandth of a radian


the unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)


a unit of angular distance equal to half a quadrant


a unit of angular distance equal to 60 degrees


the unit of solid angle adopted under the Systeme International d'Unites


a unit of area equal to one inch by one inch square


a unit of area equal to one foot by one foot square


a unit of area equal to one yard by one yard square


a unit of measurement for area, defined as the area of a square with sides of exactly 1 metre; a centiare is 1/100th of an are


a land unit equal to a quarter of a section (160 acres) and measuring 1/2 mile on a side


a unit of area (4840 square yards) used in English-speaking countries


a unit of surface area equal to 100 square meters


(abbreviated `ha') a unit of surface area equal to 100 ares (or 10,000 square meters)


a former French unit of area; equal approximately to an acre


(physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter


a former Russian unit of area equal to 2.7 acres


a South African unit of measure equal to about 2 acres


a unit of capacity for liquids (for measuring the volumes of liquids or their containers)


a unit of capacity for dry commodities (as fruit or grain)


a liquid unit officially adopted in the United States Customary System


a unit of measure for capacity officially adopted in the British Imperial System; British units are both dry and wet


a liquid measure (with different values) used in some Spanish speaking countries


an ancient Hebrew liquid measure equal to about 10 gallons


a capacity unit used for measuring fresh herring


an ancient Hebrew unit of dry measure equal to about a bushel


the maximum amount of water that a particular soil can hold


an ancient Hebrew unit of capacity equal to 10 baths or 10 ephahs


ancient Hebrew unit of liquid measure = 1.5 gallons


(mining) a unit of volume (equal to 6 cubic feet) used in measuring bodies of ore


the volume of water that would cover 1 acre to a depth of 1 foot; 43,560 cubic feet or 1233.5 cubic meters


a system of units for measuring lumber based on the board foot


the volume of a piece of wood 1 foot square and 1 inch thick


a unit of volume (as for sand or gravel)


a unit of capacity for grain equal to 80 bushels


a Scottish unit of liquid measure equal to 0.9 United States pint


a Turkish liquid unit equal to 1.3 pints


a United States liquid unit equal to 1/60 fluidram


oewn-fluidram-n oewn-fluid_dram-n oewn-fluid_drachm-n oewn-drachm-n

a unit of capacity or volume in the apothecary system equal to one eighth of a fluid ounce


a United States unit of capacity or volume equal to 1.804 cubic inches


a United States liquid unit equal to 4 fluid ounces


a United States liquid unit equal to 8 fluid ounces


a United States liquid unit equal to 16 fluid ounces; two pints equal one quart


a quantity of liquor equal to one fifth of a United States gallon


a United States liquid unit equal to 32 fluid ounces; four quarts equal one gallon


United States liquid unit equal to 4 quarts or 3.785 liters


a barrel of beer is 31 gallons and a barrel of oil is 42 gallons


a unit of measurement of capacity for dry substances officially adopted in the United States Customary System


a United States dry unit equal to 0.5 quart or 33.6 cubic inches


a United States dry unit equal to 2 pints or 67.2 cubic inches


a United States dry measure equal to 8 quarts or 537.605 cubic inches


a United States dry measure equal to 4 pecks or 2152.42 cubic inches


a British imperial capacity measure (liquid or dry) equal to 1/60th fluid dram or 0.059194 cubic centimeters


a British imperial capacity measure (liquid or dry) equal to 60 minims or 3.5516 cubic centimeters


a British imperial unit of capacity or volume (liquid or dry) equal to 8 fluid drams or 28.416 cubic centimeters (1.734 cubic inches)


a British imperial capacity unit (liquid or dry) equal to 5 fluid ounces or 142.066 cubic centimeters


a British imperial capacity measure (liquid or dry) equal to 4 gills or 568.26 cubic centimeters


a British imperial capacity measure (liquid or dry) equal to 2 pints or 1.136 liters


a British imperial capacity measure (liquid or dry) equal to 4 quarts or 4.545 liters


a British imperial capacity measure (liquid or dry) equal to 2 gallons


a British imperial capacity measure (liquid or dry) equal to 4 pecks


a British unit of capacity equal to 9 imperial gallons


an obsolete British unit of capacity equal to 18 Imperial gallons


a quarter of a hundredweight (28 pounds)


a British unit of capacity for alcoholic beverages


a British imperial capacity measure (liquid or dry) equal to 36 bushels


a metric measure of volume or capacity equal to a cube 1 millimeter on each edge


oewn-milliliter-n oewn-millilitre-n oewn-mil-n oewn-ml-n oewn-cubic_centimeter-n oewn-cubic_centimetre-n oewn-cc-n

a metric unit of volume equal to one thousandth of a liter


a metric unit of volume equal to one hundredth of a liter


a metric unit of volume equal to one tenth of a liter


oewn-liter-n oewn-litre-n oewn-l-n oewn-cubic_decimeter-n oewn-cubic_decimetre-n

a metric unit of capacity, formerly defined as the volume of one kilogram of pure water under standard conditions; now equal to 1,000 cubic centimeters (or approximately 1.75 pints)


oewn-dekaliter-n oewn-dekalitre-n oewn-decaliter-n oewn-decalitre-n oewn-dal-n oewn-dkl-n

a metric unit of volume or capacity equal to 10 liters


a metric unit of volume or capacity equal to 100 liters


oewn-kiloliter-n oewn-kilolitre-n oewn-cubic_meter-n oewn-cubic_metre-n

a metric unit of volume or capacity equal to 1000 liters


a unit of capacity equal to the volume of a cube one kilometer on each edge


a unit of measurement of information (from binary + digit); the amount of information in a system having two equiprobable states


(computer science) a bit that is used in an error detection procedure in which a 0 or 1 is added to each group of bits so that it will have either an odd number of 1's or an even number of 1's; e.g., if the parity is odd then any group of bits that arrives with an even number of 1's must contain an error


a sequence of 8 bits (enough to represent one character of alphanumeric data) processed as a single unit of information


the minimum track length that can be assigned to store information; unless otherwise specified a sector of data consists of 512 bytes


(computer science) a sector or group of sectors that function as the smallest data unit permitted

since blocks are often defined as a single sector, the terms `block' and `sector' are sometimes used interchangeably


(computer science) a block (usually one sector) that cannot reliably hold data


a group of sectors on a magnetic disk that can be reserved for the use of a particular file


(computer science) the part of a hard disk that is dedicated to a particular operating system or application and accessed as a single unit


a string of bits stored in computer memory

large computers use words up to 64 bits long


oewn-kilobyte-n oewn-kibibyte-n oewn-K-n oewn-KB-n oewn-kB-n oewn-KiB-n

a unit of information equal to 1024 bytes


oewn-kilobyte-n oewn-K-n oewn-KB-n oewn-kB-n

a unit of information equal to 1000 bytes


a unit of information equal to 1000 bits


a unit of information equal to 1024 bits


oewn-megabyte-n oewn-mebibyte-n oewn-M-n oewn-MB-n oewn-MiB-n

a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytes


a unit of information equal to 1000 kilobytes or 10^6 (1,000,000) bytes


a unit of information equal to 1000 kilobits or 10^6 (1,000,000) bits


a unit of information equal to 1024 kibibits or 2^20 (1,048,576) bits


oewn-gigabyte-n oewn-gibibyte-n oewn-G-n oewn-GB-n oewn-GiB-n

a unit of information equal to 1024 mebibytes or 2^30 (1,073,741,824) bytes


a unit of information equal to 1000 megabytes or 10^9 (1,000,000,000) bytes


a unit of information equal to 1000 megabits or 10^9 (1,000,000,000) bits


a unit of information equal to 1024 mebibits or 2^30 (1,073,741,824) bits


oewn-terabyte-n oewn-tebibyte-n oewn-TB-n oewn-TiB-n

a unit of information equal to 1024 gibibytes or 2^40 (1,099,511,627,776) bytes


a unit of information equal to 1000 gigabytes or 10^12 (1,000,000,000,000) bytes


a unit of information equal to 1000 gigabits or 10^12 (1,000,000,000,000) bits


a unit of information equal to 1024 gibibits or 2^40 (1,099,511,627,776) bits


oewn-petabyte-n oewn-pebibyte-n oewn-PB-n oewn-PiB-n

a unit of information equal to 1024 tebibytes or 2^50 bytes


a unit of information equal to 1000 terabytes or 10^15 bytes


a unit of information equal to 1000 terabits or 10^15 bits


a unit of information equal to 1024 tebibits or 2^50 bits


oewn-exabyte-n oewn-exbibyte-n oewn-EB-n oewn-EiB-n

a unit of information equal to 1024 pebibytes or 2^60 bytes


a unit of information equal to 1000 petabytes or 10^18 bytes


a unit of information equal to 1000 petabits or 10^18 bits


a unit of information equal to 1024 pebibits or 2^60 bits


oewn-zettabyte-n oewn-zebibyte-n oewn-ZB-n oewn-ZiB-n

a unit of information equal to 1024 exbibytes or 2^70 bytes


a unit of information equal to 1000 exabytes or 10^21 bytes


a unit of information equal to 1000 exabits or 10^21 bits


a unit of information equal to 1024 exbibits or 2^70 bits


oewn-yottabyte-n oewn-yobibyte-n oewn-YB-n oewn-YiB-n

a unit of information equal to 1024 zebibytes or 2^80 bytes


a unit of information equal to 1000 zettabytes or 10^24 bytes


a unit of information equal to 1000 zettabits or 10^24 bits


a unit of information equal to 1024 zebibits or 2^80 bits


a measure of the capacity of a circuit component to store charge


a measure of the quantity of electricity (determined by the amount of an electric current and the time for which it flows)


a measure of a material's ability to conduct an electrical charge


a measure of the amount of electric charge flowing past a circuit point at a specific time


an electromagnetic unit of magnetic intensity


a measure of the amount of flux per unit of cross sectional area


a measure of the strength of a magnetic field per unit area


a measure of the property of an electric circuit by which an electromotive force is induced in it


a measure of the visible electromagnetic radiation


a unit of measurement of magnetomotive force


a measure of the potential energy of a unit charge at a given point in a circuit relative to a reference point (ground)


any of various units of electricity based on forces of interaction between electric charges


a unit of capacitance equal to one trillionth of a farad


a unit of capacitance equal to one millionth of a farad


a unit of capacitance equal to one thousandth of a farad


the capacitance of a capacitor that has an equal and opposite charge of 1 coulomb on each plate and a voltage difference of 1 volt between the plates


a capacitance unit equal to one billion farads


a unit of electrical charge equal to the amount of charge transferred by a current of 1 ampere in 1 second


a unit of electrical charge equal to 10 coulombs


oewn-mho-n oewn-siemens-n oewn-reciprocal_ohm-n oewn-S-n

a unit of conductance equal to the reciprocal of an ohm


the basic unit of electric current adopted under the Systeme International d'Unites

a typical household circuit carries 15 to 50 amps


a former unit of electric current (slightly smaller than the SI ampere)


a unit of elastance equal to the reciprocal of a farad


a unit of magnetic field strength equal to one-hundred-thousandth of an oersted


the magnetic field strength 1 cm from a unit magnetic pole


a cgs unit of magnetic flux equal to the flux perpendicular to an area of 1 square centimeter in a magnetic field of 1 gauss


a unit of magnetic flux equal to 100,000,000 maxwells


a unit of magnetic flux density equal to one millionth of a gauss


a unit of magnetic flux density equal to 1 maxwell per square centimeter


a unit of magnetic flux density equal to one weber per square meter


a unit of inductance equal to one billionth of a henry


a unit of inductance equal to one thousandth of a henry


a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second


a measure of luminous flux per unit area


the intensity of light falling on a photographic film or plate


a unit of illuminance on a surface that is everywhere 1 foot from a point source of 1 candle


a cgs unit of illumination equal to the brightness of a perfectly diffusing surface that emits or reflects one lumen per square centimeter


a unit of illumination equal to 1 lumen per square meter; 0.0929 foot candle


a unit of illumination equal to 1 lumen per square centimeter; 10,000 phots equal 1 lux


a luminance unit equal to 1 candle per square meter measured perpendicular to the rays from the source


a former luminance unit equal to one lumen per square foot


a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions


oewn-candle-n oewn-candela-n oewn-cd-n oewn-standard_candle-n

the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin


a former international unit of luminous intensity; now replaced by the candela


a unit of magnetomotive force equal to 0.7958 ampere-turns


a unit of magnetomotive force equal to the magnetomotive force produced by the passage of 1 ampere through 1 complete turn of a coil; equal to 1.257 gilberts


a unit of magnetic moment of a molecular or atomic or subatomic particle


a unit of potential equal to one-hundred-millionth of a volt


a unit of potential equal to one thousandth of a volt


a unit of potential equal to one millionth of a volt


a unit of potential equal to one billionth of a volt


a unit of potential equal to one trillionth of a volt


a unit of potential equal to one quadrillionth of a volt (or one thousandth of a picovolt)


a unit of potential equal to the potential difference between two points on a conductor carrying a current of 1 ampere when the power dissipated between the two points is 1 watt; equivalent to the potential difference across a resistance of 1 ohm when 1 ampere of current flows through it


a unit of potential equal to a thousand volts


a wave number characteristic of the wave spectrum of each element


the reciprocal of the wavelength of a wave


a power unit equal to the power dissipated when 1 abampere flows across a potential difference of 1 abvolt (one ten-thousandth of a milliwatt)


a unit of power equal to one thousandth of a watt


a unit of power equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a resistance of 1 ohm


a unit of power equal to one million watts


a unit of electrical power in an AC circuit equal to the power dissipated when 1 volt produces a current of 1 ampere


a unit of electrical power equal to 1000 volt-amperes


a unit of radioactivity equal to one thousandth of a curie


a unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second


the SI unit of energy absorbed from ionizing radiation; equal to the absorption of one joule of radiation energy by one kilogram of matter; one gray equals 100 rad


a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air


a unit strength of a radioactive source equal to one million disintegrations per second


(roentgen equivalent man) the dosage of ionizing radiation that will cause the same amount of injury to human tissue as 1 roentgen of X-rays


a dosage of ionizing radiation equivalent to one thousandth (1/1000) of a rem


a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material


a unit of resistance equal to a billionth of an ohm


a unit of electrical resistance equal to the resistance between two points on a conductor when a potential difference of one volt between them produces a current of one ampere


a unit of resistance equal to one million ohms


a measure of explosive power (of an atomic weapon) equal to that of 1000 tons of TNT


a measure of explosive power (of an atomic weapon) equal to that of one million tons of TNT


a unit of force equal to the force that imparts an acceleration of 1 cm/sec/sec to a mass of 1 gram


a unit of force equal to the force that imparts an acceleration of 1 m/sec/sec to a mass of 1 kilogram; equal to 100,000 dynes


a unit of force equal to the force that imparts an acceleration of 1 foot/sec/sec to a mass of 1 pound; equal to 0.1382 newtons


a nontechnical unit of force equal to the mass of 1 pound with an acceleration of free fall equal to 32 feet/sec/sec


(used only in combination) something weighing a given number of pounds


a unit of force equal to the force exerted by gravity; used to indicate the force to which a body is subjected when it is accelerated


a unit of gravitational acceleration equal to one centimeter per second per second (named after Galileo)


a scale from 0 to 12 for the force of the wind


a linear unit used for astronomical distances


a linear unit of distance in metric terms


a linear unit of distance used in navigation


a unit of length equal to one twelfth of a foot


a linear unit of length equal to 12 inches or a third of a yard


(used only in combinations) the height or length of something in feet


a unit of length equal to 3 feet; defined as 91.44 centimeters; originally taken to be the average length of a stride


(used only in combinations) the height or length of something in yards

the golfer hit a 300-yarder to the green


oewn-mile-n oewn-statute_mile-n oewn-stat_mi-n oewn-land_mile-n oewn-international_mile-n oewn-mi-n

a unit of length equal to 1,760 yards or 5,280 feet; exactly 1609.344 meters


(used only in combinations) the length of something in miles


a unit of length equal to half of 1 mile


a unit of length equal to a quarter of 1 mile


an obsolete unit of distance of variable length (usually 3 miles)


a linear unit (1/40 inch) used to measure diameter of buttons


a former unit of length for cloth equal to 1/16 of a yard


(in India) a unit of length having different values in different localities


a Spanish unit of length (about a yard) having different values in different localities


an ancient unit of length based on the length of the forearm


oewn-finger-n oewn-fingerbreadth-n oewn-finger-ap-s_breadth-n oewn-digit-n

the length of breadth of a finger used as a linear measure


about seven inches; the breadth of a fist with the thumb stuck out (used especially in archery to give the correct distance of the string from the bow)


the most extreme possible amount or value


a unit of length equal to 4 inches; used in measuring horses


any unit of length based on the breadth of the human hand


the length or height based on the size of a human or animal head

he is two heads taller than his little sister


Chinese distance measure; approximately 0.5 kilometers


a unit of length equal to 1/100 of a chain


the number of openings per linear inch of a screen; measures size of particles


a unit of length equal to one thousandth of an inch; used to specify thickness (e.g., of sheets or wire)


a Swedish unit of length equivalent to 10 km


an ancient Roman unit of length equivalent to 1620 yards


an ancient Roman unit of length (4.85 English feet) measured as the distance from the heel of one foot to the heel of the same foot when next it touches the ground


a modern version of the Roman pace now taken to be 5 feet


the length of a single step in marching (taken to be 30 inches for quick time or 36 inches for double time)


a linear unit based on the length or width of the human hand


a unit of length based on the width of the expanded human hand (usually taken as 9 inches)


a U.S. unit of measure equal to 1609.347 meters; derived from the use of 39.37 inches as the conversion for one meter


the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers


the distance light travels in a vacuum in one hour; approximately one billion kilometers


the distance light travels in a vacuum in one minute; approximately 18 million kilometers


the distance light travels in a vacuum in one second; approximately 300,000 kilometers


a unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers)


a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years


a metric unit of length equal to one quadrillionth of a meter


a metric unit of length equal to one trillionth of a meter


a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation


oewn-nanometer-n oewn-nanometre-n oewn-nm-n oewn-millimicron-n oewn-micromillimeter-n oewn-micromillimetre-n

a metric unit of length equal to one billionth of a meter


a metric unit of length equal to one millionth of a meter


a metric unit of length equal to one thousandth of a meter


a metric unit of length equal to one hundredth of a meter


a metric unit of length equal to one tenth of a meter


the basic unit of length adopted under the Systeme International d'Unites (approximately 1.094 yards)


oewn-decameter-n oewn-dekameter-n oewn-decametre-n oewn-dekametre-n oewn-dam-n oewn-dkm-n

a metric unit of length equal to ten meters


a metric unit of length equal to 100 meters


oewn-kilometer-n oewn-kilometre-n oewn-km-n oewn-klick-n

a metric unit of length equal to 1000 meters (or 0.621371 miles)


a metric unit of length equal to 10,000 meters


a linear unit of measurement (equal to 6 feet) for water depth


oewn-nautical_mile-n oewn-mile-n oewn-mi-n oewn-naut_mi-n oewn-international_nautical_mile-n oewn-air_mile-n

a unit of length used in navigation; exactly 1,852 meters; historically based on the distance spanned by one minute of arc in latitude


oewn-nautical_mile-n oewn-naut_mi-n oewn-mile-n oewn-mi-n oewn-geographical_mile-n oewn-Admiralty_mile-n

a former British unit of length equivalent to 6,080 feet (1,853.184 meters); 800 feet longer than a statute mile


a former British unit of length once used in navigation; equivalent to 6,000 feet (1828.8 meters)


the amount that can be bought for a halfpenny


the amount that can be bought for a penny


the basic monetary unit in many countries; equal to 100 cents


the basic monetary unit of most members of the European Union (introduced in 1999); in 2002 twelve European nations (Germany, France, Belgium, Luxembourg, the Netherlands, Italy, Spain, Portugal, Ireland, Greece, Austria, Finland) adopted the euro as their basic unit of money and abandoned their traditional currencies


the basic monetary unit in many countries; equal to 100 centimes


a monetary unit that is valued at a fraction (usually one hundredth) of the basic monetary unit


monetary unit in the Islamic State of Afghanistan


the basic unit of money in Argentina; equal to 100 centavos


the basic unit of money in Panama; equal to 100 centesimos


the basic unit of money in Ethiopia; equal to 100 cents


a fractional monetary unit of several countries


a fractional monetary unit of several countries: Panama and Italy and Uruguay and Chile


a fractional monetary unit of Venezuela and Costa Rica and Equatorial Guinea and Paraguay and Spain


a fractional monetary unit of several countries: El Salvador and Sao Tome and Principe and Brazil and Argentina and Bolivia and Colombia and Cuba and the Dominican Republic and Ecuador and El Salvador and Guatemala and Honduras and Mexico and Nicaragua and Peru and the Philippines and Portugal


a fractional monetary unit of several countries: France and Algeria and Belgium and Burkina Faso and Burundi and Cameroon and Chad and the Congo and Gabon and Haiti and the Ivory Coast and Luxembourg and Mali and Morocco and Niger and Rwanda and Senegal and Switzerland and Togo


the basic unit of money in Venezuela; equal to 100 centimos


the basic unit of money in Costa Rica; equal to 100 centimos


the basic unit of money in El Salvador; equal to 100 centavos


the basic unit of money in Brazil; equal to 100 centavos


the basic unit of money in Bahrain; equal to 1,000 fils


a fractional monetary unit in Bahrain and Iraq and Jordan and Kuwait; equal to one thousandth of a dinar


the basic unit of money in Iraq; equal to 1,000 fils


the basic unit of money in Jordan; equal to 1,000 fils


the basic unit of money in Kuwait; equal 1,000 fils


worth one tenth of a Kuwaiti dinar; equal 100 fils


the basic unit of money in Morocco; equal to 100 centimes


monetary unit in the United Arab Emirates


the basic unit of money in the United Arab Emirates; equal to 100 fils


the basic unit of money in Australia and Nauru


a fractional monetary unit of Japan and Indonesia and Cambodia; equal to one hundredth of a yen or rupiah or riel


the Canadian dollar has the image of loon on one side of the coin


the basic unit of money in the Cayman Islands


the basic unit of money in Trinidad and Tobago


the basic unit of money in the United States


a United States dollar deposited in a European bank and used as an international currency to finance trade


formerly the basic unit of money in Greece


the basic unit of money on Sao Tome e Principe


the basic unit of money on Cape Verde; equal to 100 centavos


formerly the basic monetary unit of Portugal; equal to 100 centavo


1 conto equals 1,000 escudos in Portugal


formerly the basic unit of money in Hungary until it was replaced by the forint in 1946


formerly the basic unit of money in Belgium


the basic unit of money in the Central African Republic


formerly the basic unit of money in France


the basic unit of money in the Ivory Coast


formerly the basic unit of money in Luxembourg


the basic unit of money in Paraguay; equal to 100 centimos


oewn-guilder-n oewn-gulden-n oewn-florin-n oewn-Dutch_florin-n

formerly the basic unit of money in the Netherlands; equal to 100 cents


the basic unit of money in Suriname; equal to 100 cents


the basic unit of money in Papua New Guinea


100 toea equal 1 kina in Papua New Guinea


the basic unit of money in Czech Republic


100 halers equal 1 koruna in Czech Republic


a monetary subunit in Denmark and Norway and Sweden; 100 ore equal 1 krona


100 lwei equal 1 kwanza in Angola until 1990