Search Result for "commutate": 
Wordnet 3.0

VERB (1)

1. reverse the direction of (an alternating electric current) each half cycle so as to produce a unidirectional current; 



WordNet (r) 3.0 (2006):

commutate
    v 1: reverse the direction of (an alternating electric current)
         each half cycle so as to produce a unidirectional current