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behaviour

[bih-heyv-yer] /bɪˈheɪv yər/
noun, Chiefly British
1.
Usage note
See -or1.

behavior

or (especially British) behaviour

[bih-heyv-yer] /bɪˈheɪv yər/
noun
1.
manner of behaving or acting.
2.
Psychology, Animal Behavior.
  1. observable activity in a human or animal.
  2. the aggregate of responses to internal and external stimuli.
  3. 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.
Origin of behavior
late Middle English
1375-1425
1375-1425; behave + -ior (on model of havior, variant of havor < Middle French (h)avoirLatin habēre to have); replacing late Middle English behavoure, behaver. See behave, -or1
Related forms
behavioral, adjective
behaviorally, adverb
interbehavior, noun
interbehavioral, adjective
interbehaviorally, adverb
Synonyms
1. demeanor, manners; bearing, carriage. Behavior, conduct, deportment, comportment refer to one's actions before or toward others, especially on a particular occasion. Behavior refers to actions usually measured by commonly accepted standards: His behavior at the party was childish. Conduct refers to actions viewed collectively, especially as measured by an ideal standard: Conduct is judged according to principles of ethics. Deportment is behavior related to a code or to an arbitrary standard: Deportment is guided by rules of etiquette. The teacher gave Susan a mark of B in deportment. Comportment is behavior as viewed from the standpoint of one's management of one's own actions: His comportment was marked by a quiet assurance.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for behaviour

behaviour

/bɪˈheɪvjə/
noun
1.
manner of behaving or conducting oneself
2.
on one's best behaviour, behaving with careful good manners
3.
(psychol)
  1. the aggregate of all the responses made by an organism in any situation
  2. a specific response of a certain organism to a specific stimulus or group of stimuli
4.
the action, reaction, or functioning of a system, under normal or specified circumstances
Derived Forms
behavioural, (US) behavioral, adjective
Word Origin
C15: from behave; influenced in form by Middle English havior, from Old French havoir, from Latin habēre to have
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for behaviour
n.

chiefly British English spelling of behavior; for suffix, see -or.

behavior

n.

late 15c., essentially from behave, but with ending from Middle English havour "possession," a word altered (by influence of have) from aver, noun use of Old French verb aveir "to have."

Online Etymology Dictionary, © 2010 Douglas Harper
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behaviour in Medicine

behavior be·hav·ior (bĭ-hāv'yər)
n.

  1. The actions or reactions of persons or things in response to external or internal stimuli.

  2. The manner in which one behaves.


be·hav'ior·al adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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behaviour in Science
behavior
  (bĭ-hāv'yər)   
  1. The actions displayed by an organism in response to its environment.

  2. One of these actions. Certain animal behaviors (such as nest building) result from instinct, while others (such as hunting) must be learned.

  3. The manner in which a physical system, such as a gas, subatomic particle, or ecosystem, acts or functions, especially under specified conditions.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Idioms and Phrases with behaviour

behavior

The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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