/ Dictionary / Index P phenyl: Meaning and Definition of Find definitions for: phen•yl Pronunciation: (fen'l, fēn'l), [key] — adj. Chem. containing the phenyl group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phentolamine phenylacetaldehyde Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language