/ Dictionary / Index M methylal: Meaning and Definition of Find definitions for: meth•yl•al Pronunciation: (meth"u-lal', meth'u-lal"), [key] — n. Chem. a colorless, flammable, volatile liquid, CHO, having a chloroformlike odor, used chiefly as a solvent, in perfumery, and in organic synthesis. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. methylacetic acid methyl alcohol Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language