Pronunciation: (bi-hāv'yur),[key] —n. 1. manner of behaving or acting.
2. Psychol.,Animal Behav. a. observable activity in a human or animal.
b. the aggregate of responses to internal and external stimuli.
c. a stereotyped, species-specific activity, as a courtship dance or startle reflex.
3. Often, behaviors. a behavior pattern.
4. the action or reaction of any material under given circumstances: the behavior of tin under heat.Also,esp. Brit.,behaviour.