English Explanatory Dictionary

identity

English dictionary entry

Meanings

noun
  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.
  3. A name or persona—a mask or appearance one presents to the world—by which one is known.
  4. An equation which always holds true regardless of the choice of input variables.
  5. Any function which maps all elements of its domain to themselves.
  6. An element of an algebraic structure which, when applied to another element under an operation in that structure, yields this second element.
  7. A well-known or famous person.

Pronunciation

/aɪˈdɛntɪti/ /aɪˈdɛn(t)ɪti/ /aɪˈdɛn(t)əti/ [aɪˈdɛnɪɾi] [aɪˈdɛnəɾi] /ɑɪˈdentəti/ EN-AU ck1 identity.ogg LL-Q1860 (eng)-Wodencafe-identity.wav

Word forms

identity identities

Etymology

From Middle English ydemptite, from Middle French identité and its etymon Late Latin idemptitās, identitās, from idem (“the same”) + -tās (suffix forming abstract nouns) as a calque of Ancient Greek ταὐτότης (tautótēs, “sameness”).

Synonyms

identicalness identicality sameness identity sameliness uniformity individuality beinghood ipseity personality personhood personness selfdom selfhood selfness selfship identity function celebrity

Antonyms

unidenticality nonidentity difference differentiation differentness distinction distinguishedness diversity

Related words

identic identical identification identify

Derived words

Abel-Jacobi-Liouville identity Abel's identity age identity amputee identity disorder Bézout's identity bioidentity body integrity identity disorder Capelli's identity coidentity cultural identity cyberidentity de Moivre's identity dissociative identity disorder e-identity Euler's identity gender identity disorder gender identity syndrome identicard identicide identicon identitarian identity broker identity card identity crisis identity death identity document identity functor identityless identity matrix identity morphism identity of indiscernibles identity parade identity police identity policing identity politician identity politics identity property identity provider identity restoration identity theft Jacobi identity law of identity misidentity nonidentity Pythagorean trigonometric identity self-identity standard of identity steal someone's identity subidentity transidentity trig identity trigonometric identity Weinstein-Aronszajn identity
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