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

adjective Mathematics.

(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.
(of two matrices) defined by an anticommutative operation.

Origin of anticommutative Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019