Definitions
1.nounSameness, identicalness; the quality or fact of (several specified things) being the same.
2.nounThe 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."
3.nounA name or persona—a mask or appearance one presents to the world—by which one is known."This criminal has taken on several identities."
4.nounAn equation which always holds true regardless of the choice of input variables.
5.nounAny function which maps all elements of its domain to themselves.
6.nounAn element of an algebraic structure which, when applied to another element under an operation in that structure, yields this second element.
7.nounA well-known or famous person."2013 April 4, "Cricket identities consult lawyers", New Zealand Herald"