/ Dictionary / Index P propenyl group: Meaning and Definition of Find definitions for: pro'penyl group" Pronunciation: [key] — Chem. Chem. a univalent group derived from propylene, CHCH=CH−. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. propenyl alcohol proper Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language