/ Dictionary / Index P phencyclidine: Meaning and Definition of Find definitions for: phen•cy•cli•dine Pronunciation: (fen-sī'kli-dēn", -sik'li-), [key] — n. Pharm. an anesthetic drug, CHN, used as an animal tranquilizer: also widely used in several forms as an illicit hallucinogen. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phencyclidine (Thesaurus) phenazopyridine phene Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language