/ Dictionary / Index P phenylacetaldehyde: Meaning and Definition of Find definitions for: phen•yl•ac•et•al•de•hyde Pronunciation: (fen'l-as"i-tal'du-hīd", fēn'-), [key] — n. Chem. a colorless, oily, water-insoluble liquid, CHO, having a hyacinthlike odor: used chiefly in perfumery. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phenyl phenyl acetate 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