/ Dictionary / Index N nalorphine: Meaning and Definition of Find definitions for: nal•or•phine Pronunciation: (nal'ur-fēn", nal-ôr'fēn), [key] — n. Pharm. a white, crystalline, water-soluble powder, CHNO, used to nullify respiratory depression due to narcotics and for the diagnosis of addiction to narcotics. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nalorphine (Thesaurus) Nalline naloxone Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language