/ Dictionary / Index P phenacetin: Meaning and Definition of Find definitions for: phe•nac•e•tin Pronunciation: (fu-nas'i-tin), [key] — n. Pharm. a white, slightly water-soluble, crystalline solid, CHNO, used in medicine chiefly as an agent for checking or preventing fever or for relieving pain: withdrawn because of unfavorable side effects. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phenacetin (Thesaurus) phenacaine phenacite Related Content Daily Word Quiz: torrid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language