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identity

From Wiktionary, the free dictionary

English

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EnglishWikipedia has an article on:
Wikipedia

Etymology

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    FromMiddle Frenchidentité, fromLatinidentitās.

    Pronunciation

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    Noun

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    identity (countable anduncountable,pluralidentities)

    1. Sameness,identicalness; the quality or fact of (several specified things) being the same.
      Synonyms:seeThesaurus:sameness
      Coordinate terms:equivalence;similarity
      • 1997, “Hydrothermal Vent Fauna”, inAdvances in Marine Biology: The Biogeography of the Oceans, page111:
        [] suggesting the two are different stages of the same species. Theidentity of the two species is further suggested by allozyme analysis[]
    2. Thedifference orcharacter that marks off anindividual orcollective from therest of the same kind;selfhood; the sense of who something or someone or oneself is, or therecurringcharacteristics thatenable therecognition of such anindividual orgroup by others or themselves.
      Synonyms:individuality;see alsoThesaurus:selfhood
      I've been through so many changes, I have no sense ofidentity.
      This nation has a strongidentity.
    3. Aname orpersona—a mask or appearance one presents to the world—by which one is known.
      This criminal has taken on severalidentities.
      In this show, the competitor'sidentity will remain secret until after the vote.
    4. (mathematics) Anequation which always holds true regardless of the choice of inputvariables.
      Synonym:identity function
      The equation (x+y)(x−y) = x2−y2 is an algebraicidentity. It is true regardless of the values of x and y.
    5. (algebra, computing) Anyfunction whichmaps all elements of itsdomain 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.
      Zero is theidentity for the addition of real numbers.
    7. (Australia, New Zealand) Awell-known orfamous person.
      Synonyms:celebrity,personality

    Hyponyms

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    Derived terms

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    Related terms

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    Translations

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    the sameness some individuals share to make up the same kind or universal
    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: functionseeidentity function
    algebra: elementseeidentity element
    The translations below need to be checked and inserted above into the appropriate translation tables. See instructions atWiktionary:Entry layout § Translations.
    Translations to be checked

    References

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    Retrieved from "https://en.wiktionary.org/w/index.php?title=identity&oldid=89270373"
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