behavior behavior /bɪˈheɪvjɝ/

noun

1. () [American] Manner of acting or controlling yourself  ( behaviour [Canadian, British] , doings , conduct , behavior [American] )
   manner of acting or controlling yourself
     The child's behavior in class improved after the teacher's intervention.
   The child's behavior in class improved after the teacher's intervention.
   
2. () [American] (behavioral attributes) the way a person behaves toward other people  ( behaviour [Canadian, British] , demeanour [Canadian, British] , deportment , behavior [American] , conduct , demeanor [American] )
   (behavioral attributes) the way a person behaves toward other people
     His behavior at the party was inappropriate and disrespectful.
   His behavior at the party was inappropriate and disrespectful.
   
3. () [American] The action or reaction of something (as a machine or substance) under specified circumstances  ( behaviour [Canadian, British] , behavior [American] )
   the action or reaction of something (as a machine or substance) under specified circumstances
    The behavior of small particles can be studied in experiments
   the behavior of small particles can be studied in experiments
   
4. [American] (psychology) the aggregate of the responses, reactions or movements made by an organism in any situation  ( behavior [American] , behaviour [Canadian, British] )
   (psychology) the aggregate of the responses, reactions or movements made by an organism in any situation