/ Dictionary / Index C commutate: Meaning and Definition of Find definitions for: com•mu•tate Pronunciation: (kom'yu-tāt"), [key] — -tat•ed, -tat•ing. to reverse the direction of (a current or currents), as by a commutator. to convert (alternating current) into direct current by use of a commutator. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: commutate (Thesaurus) commutable commutation Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language