/ Dictionary / Index N naloxone: Meaning and Definition of Find definitions for: nal•ox•one Pronunciation: (nu-lok'sōn, nal'uk-sōn"), [key] — n. Pharm. a narcotic analgesic antagonist, CHNO, used in the reversal of acute narcotic analgesic respiratory depression. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: naloxone (Thesaurus) nalorphine naltrexone 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