(Mathematics)involving the condition that a group of quantities connected by operators gives the same result whatever the order of the quantities involved, e. g. a × b = b × a (数)交换的(如a × b = b × a) ■(rare)(generally) relating to or involving substitution or exchange (罕)(一般)代替的;交换的
语源
mid 16th cent. (in the sense 'relating to transactions between people'): from French commutatif, -ive or medieval Latin commutativus, from commutat- 'exchanged', from the verb commutare (see commute)