/ Dictionary / Index M methylglyoxal: Meaning and Definition of Find definitions for: meth•yl•gly•ox•al Pronunciation: (meth"ul-glī-ok'sal, -sul), [key] — n. Chem. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. methyl formate methyl group Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language