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