e·qual·i·ty 
(ĭ-kwŏlĭ-tē)
(ĭ-kwŏlĭ-tē)n. pl. e·qual·i·ties
1. The state or quality of being equal.
2. Mathematics A statement, usually an equation, that one thing equals another.
[Middle English equalite, from Old French, from Latin aequālitās, from aequālis, equal; see EQUAL.]