to repeatedly reverse the direction of (an electric current), esp. in a motor that uses direct current as its power source or in a generator that produces direct current
Origin of commutateback-formation ; from commutation
transitive verbcom·mu·tat·ed, com·mu·tat·ing, com·mu·tates
To reverse the direction of (an alternating electric current) each half-cycle to produce a unidirectional current.
Origin of commutateBack-formation from commutator.