anticommutative

[ an-tee-kuh-myoo-tuh-tiv, -kom-yuh-tey-, an-tahy- ]

adjective

, Mathematics.

1. (of a binary operation) having the property that one term operating on a second is equal to the negative of the second operating on the first, as ab = −ba.
2. (of two matrices) defined by an anticommutative operation.

Word History and Origins

Origin of anticommutative¹

anti- + commutative