/ Dictionary / Index C commutual: Meaning and Definition of Find definitions for: com•mu•tu•al Pronunciation: (ku-my'ch-ul), [key] — adj. Archaic. mutual; reciprocal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. commuter tax commy Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language