/ Dictionary / Index M malonyl group: Meaning and Definition of Find definitions for: mal'onyl group" Pronunciation: [key] the bivalent group CHO, derived from malonic acid. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. malonyl malonylurea 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