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- Sameness, identicalness; the quality or fact of (several specified things) being the same.
- The difference or character that marks off an individual or collective from the rest of the same kind, selfhood, sense of who something or someone or oneself is, or the recurring characteristics that enable the recognition of such an individual or group by others or themself.
- I've been through so many changes, I have no sense of identity.
- This nation has a strong identity.
- (The addition of quotations indicative of this usage is being sought:)
- A name or persona—a mask or appearance one presents to the world—by which one is known.
- This criminal has taken on several identities.
- In this show, the competitor's identity will remain secret until after the vote.
- (mathematics) An equation which always holds true regardless of the choice of input variables.
- The equation (x+y)(x−y) = x2−y2 is an algebraic identity. It is true regardless of the values of x and y.
- (algebra, computing) Any function which maps all elements of its domain to themselves.
- (algebra) An element of an algebraic structure which, when applied to another element under an operation in that structure, yields this second element.
- (Australia, New Zealand) A well-known or famous person.
- 1887 July 19, “Drowned at Williamstown”, in The Age:
- The body of a well known old identity named James Conroy […] was found in the water yesterday afternoon…
- 2013 April 4, "Cricket identities consult lawyers", New Zealand Herald
- 2016 January 13, "Kings Cross identities arrested in connection with murder", The Sydney Morning Herald
- (sameness): See also Thesaurus:sameness
- (difference that marks off an individual): individuality, selfhood; see also Thesaurus:selfhood
- (mathematical function): identity function
- (famous person): celebrity, personality
the difference or character that marks off an individual or group from the rest
name or persona
a mathematical equation that holds true irrespective of input elements.
algebra: function — see identity function
algebra: element — see identity element
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout § Translations.
Translations to be checked
- identity at OneLook Dictionary Search
- identity in Keywords for Today: A 21st Century Vocabulary, edited by The Keywords Project, Colin MacCabe, Holly Yanacek, 2018.
- identity in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
- identity in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.