identity

Plural

identities

1. 1.Sameness, identicalness; the quality or fact of (several specified things) being the same.

2. 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.

   • This nation has a strong identity.
   • I've been through so many changes, I have no sense of identity.
   • His own identity was fading out into a grey impalpable world: the solid world itself which these dead had one time reared and lived in was dissolving and dwindling.

3. 3.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.

4. 4.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.

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