ˈkämyəˌtād.iv, kəˈmyüd.əd.iv adjective
Etymology: Medieval Latin commutativus, from Latin commutatus (past participle of commutare to exchange) + -ivus -ive — more at commute
1. : of or relating to commutation : effecting or showing commutation
a commutative fine
commutative payment plans
2. of a mathematical or logical operation : consisting of a step or sequence of steps in which the final result is independent of the order of the elements or steps
commutative multiplication
commutative addition