(category theory) A functor from a category to itself which maps each object of that category to itself and each morphism of that category to itself.

(of twins) being the result of two sperm cells fertilizing a single egg, which then splits into two embryos. They share all of the mother's genetic material but only half of the father's.

The act of self-identifying.

(transitive, chiefly in passive, or reflexive) To identify (oneself) with a particular person or group, or as part of a particular group.

plural of vehicle identification number

The set of roles and assumptions in a particular culture that are associated with gender and pertain to non-sexual activities, such as occupation, appropriate expressions of emotion, etc.

(politics) An advocate of or participant in identity politics.

plural of identity morphism

plural of idea virus

plural of identification division