/ Dictionary / Index M methyl cyanide: Meaning and Definition of Find definitions for: meth'yl cy'anide Pronunciation: [key] acetonitrile. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. methyl chloroformate methylcyclohexanol Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language