/ Dictionary / Index M monoid: Meaning and Definition of Find definitions for: mon•oid Pronunciation: (mon'oid), [key] — n. Math. groupoid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. monohydroxy monokine Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language