/ Dictionary / Index V vinyl group: Meaning and Definition of Find definitions for: vi'nyl group" Pronunciation: [key] — Chem. Chem. the univalent group CH, derived from ethylene. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. vinylethylene vinylidene chloride Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language