Meaning of “definition” in the English Dictionary

"definition" in British English

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definitionnoun

uk /ˌdef.ɪˈnɪʃ.ən/ us /ˌdef.ɪˈnɪʃ.ən/

definition noun (EXPLANATION)

B2 [ C ] a statement that explains the meaning of a word or phrase:

a dictionary definition
What is the definition of "mood"?

[ C ] a description of the features and limits of something:

The legal definition of what is and what is not pornography is very unsatisfactory.
by definition

because of its own features:

Psychology is by definition an inexact science.

More examples

  • In this book, definitions are printed in roman.
  • The definition of 'antique' varies between "100 years old" and "made before the turn of the century".
  • Double click on any word on the screen to see its definition.
  • They couldn't agree on a universally acceptable definition of 'Marxism'.
  • Each country has its own definition of the terms 'asylum seeker' and 'refugee'.

(Definition of “definition” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"definition" in American English

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definitionnoun

us /ˌdef·əˈnɪʃ·ən/

definition noun (EXPLANATION)

English [ C ] a statement that explains the meaning of a word or phrase:

What is the definition of “mood”?

definition noun (SEEING CLEARLY)

[ U ] the degree to which something can be clearly seen or heard:

The tape recorded conversation lacked definition – there was too much background noise.

Idiom(s)

(Definition of “definition” from the Cambridge Academic Content Dictionary © Cambridge University Press)