- manner of behaving or acting.
- Psychology, Animal Behavior.
- observable activity in a human or animal.
- the aggregate of responses to internal and external stimuli.
- a stereotyped, species-specific activity, as a courtship dance or startle reflex.
- Often behaviors. a behavior pattern.
- the action or reaction of any material under given circumstances: the behavior of tin under heat.
Also especially British, be·hav·iour.