/ Dictionary / Index M methyl lactate: Meaning and Definition of Find definitions for: meth'yl lac'tate Pronunciation: [key] a colorless liquid, CHO, soluble with water and most organic liquids: used chiefly as a solvent for cellulose acetate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. methyl isocyanate methylmercury Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language