/ Dictionary / Index O opiumism: Meaning and Definition of Find definitions for: o•pi•um•ism Pronunciation: (ō'pē-u-miz"um), [key] — n. the addictive use of opium as a stimulant or intoxicant. the pathological condition caused by the addictive use of opium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. opium opium poppy Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language