/ Dictionary / Index M malonyl: Meaning and Definition of Find definitions for: mal•o•nyl Pronunciation: (mal'u-nil, -nēl"), [key] — adj. Chem. containing the malonyl group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. malonic acid malonyl group Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language