synonyms, antonyms, definitions, examples & translations of identity in English

English Online Dictionary. What means identity‎? What does identity mean?

From Middle French identité, from Latin identitās

  • (Received Pronunciation) IPA(key): /aɪˈdɛntɪti/
  • (General American) IPA(key): /aɪˈdɛn(t)ɪti/, /aɪˈdɛn(t)əti/, [aɪˈdɛnɪɾi], [aɪˈdɛnəɾi]
  • (General Australian) IPA(key): /ɑɪˈdentəti/

identity (countable and uncountable, plural identities)

  1. Sameness, identicalness; the quality or fact of (several specified things) being the same.
  2. The difference or character that marks off an individual or collective from the rest of the same kind; selfhood; the 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 themselves.
    (The addition of quotations indicative of this usage is being sought:)
  3. A name or persona—a mask or appearance one presents to the world—by which one is known.
  4. (mathematics) An equation which always holds true regardless of the choice of input variables.
  5. (algebra, computing) Any function which maps all elements of its domain to themselves.
  6. (algebra) An element of an algebraic structure which, when applied to another element under an operation in that structure, yields this second element.
  7. (Australia, New Zealand) A well-known or famous person.
  • (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
  • “identity”, in 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, →OCLC.
  • “identity”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

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