/ Dictionary / Index M monochloride: Meaning and Definition of Find definitions for: mon•o•chlo•ride Pronunciation: (mon"u-klôr'īd, -klōr'-), [key] — n. Chem. a chloride containing one atom of chlorine with one atom of another element or a group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. monochasium monochloroacetic acid Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language