a radio-astronomy and ionospheric observatory near Arecibo, Puerto Rico: site of one of the world’s largest single-dish radio telescopes, 1000 feet (305 meters) in diameter.
an observatory in Puerto Rico at which the world’s largest dish radio telescope (diameter 305 m) is situated. It is operated by the National Astronomy and Ionosphere Center
a toxic alkaloid obtained from the seeds of the , used chiefly in veterinary medicine as an agent for killing and expelling intestinal worms. Historical Examples arecoline is an oil, and the physiological action of the betel nut is alone due to this substance. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 6 Various
areflexia areflexia a·re·flex·i·a (ā’rĭ-flěk’sē-ə) n. The absence of reflexes.
noun a plural of erg2
unconcerned with or indifferent to matters. adjective not practicing a religion; indifferent to or uninfluenced by a religion Examples The US advocates an areligious education.