/ Dictionary / Index E ethyl group: Meaning and Definition of Find definitions for: eth'yl group" Pronunciation: [key] — Chem. Chem. the univalent group, CH–, derived from ethane. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ethyl ether ethyl hexoate Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language