Noun

(identities)

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

* 1997 , Hydrothermal Vent Fauna'', in ''Advances in Marine Biology: The Biogeography of the Oceans , page 111:

The difference or character that marks off an individual from the rest of the same kind, selfhood.

*

A name or persona—the mask or appearance one presents to the world—by which one is known.

This criminal has taken on several identities .

Sense of who one is.

I've been through so many changes, I have no sense of identity .

This nation has a strong identity .

(algebra, computing) Any function which maps all elements of its domain to themselves.

(algebra) An element of an algebraic structure which, when applied to another element under an operation in that structure, yields this, second element.

Noun

(en noun)

The beginning of something.

The source of a river, information, goods, etc.

* {{quote-magazine, date=2013-06-14, author= Sam Leith

, volume=189, issue=1, page=37, magazine=(The Guardian Weekly) , title= Where the profound meets the profane , passage=Swearing doesn't just mean what we now understand by "dirty words". It is entwined, in social and linguistic history, with the other sort of swearing: vows and oaths. Consider for a moment the origins of almost any word we have for bad language – "profanity", "curses", "oaths" and "swearing" itself.}}

(mathematics) The point at which the axes of a coordinate system intersect.

(anatomy) The proximal end of attachment of a muscle to a bone that will not be moved by the action of that muscle.

(cartography) An arbitrary point on the earth's surface, chosen as the zero for a system of coordinates.

(in the plural) Ancestry.