/ Dictionary / Index M methyl bromide: Meaning and Definition of Find definitions for: meth'yl bro'mide Pronunciation: [key] a colorless, poisonous gas, CHBr, used chiefly as a solvent, refrigerant, and fumigant and in organic synthesis. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. methylbenzyl acetate methylcatechol Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language