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definition

American  
[def-uh-nish-uhn] / ˌdɛf əˈnɪʃ ən /

noun

  1. the act of defining, or of making something definite, distinct, or clear.

    We need a better definition of her responsibilities.

  2. the formal statement of the meaning or significance of a word, phrase, idiom, etc., as found in dictionaries. An online dictionary resource, such as Dictionary.com, can give users direct, immediate access to the definitions of a term, allowing them to compare definitions from various dictionaries and stay up to date with an ever-expanding vocabulary.

  3. the condition of being definite, distinct, or clearly outlined.

    His biceps have great muscle definition.

  4. Optics. sharpness of the image formed by an optical system.

  5. Radio and Television. the accuracy of sound or picture reproduction.


definition British  
/ ˌdɛfɪˈnɪʃən /

noun

  1. a formal and concise statement of the meaning of a word, phrase, etc

  2. the act of defining a word, phrase, etc

  3. specification of the essential properties of something, or of the criteria which uniquely identify it

  4. the act of making clear or definite

  5. the state or condition of being clearly defined or definite

  6. a measure of the clarity of an optical, photographic, or television image as characterized by its sharpness and contrast

"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

Other Word Forms

  • definitional adjective
  • definitionally adverb
  • predefinition noun
  • redefinition noun
  • self-definition noun
  • subdefinition noun

Etymology

Origin of definition

First recorded in 1350–1400; Middle English diffinicioun, from Old French diffinition, from Latin dēfīnītiōn- (stem of dēfīnītiō ), equivalent to dēfīnīt(us) ( definite ) + -iōn- noun suffix ( -ion )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But looking through her spotting scope, they appeared in high definition.

From Los Angeles Times

“Appreciation,” someone sternly defines as the job of criticism and you can tell his definition isn’t wholly shared.

From Los Angeles Times

"Let's be accurate, my bill talks about terrorists and about an act of terrorism, there's no discrimination here. The definition is very clear," he says.

From BBC

There were no potted histories, no schematic definition of concepts, no leading questions to wake up sleepy students.

From The Wall Street Journal

In her ruling, Judge Garnett said two of the four federal charges did not "meet the federal statutory definition of a 'crime of violence' as matter of law".

From BBC