/ Dictionary / Index L levorphanol: Meaning and Definition of Find definitions for: le•vor•pha•nol Pronunciation: (lu-vôr'fu-nôl", -nol"), [key] — n. Pharm. a potent synthetic narcotic analgesic, CHNO, as the tartrate, used in the treatment of moderate to severe pain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. levorotatory levulinic acid Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language