/ Dictionary / Index A antiworld: Meaning and Definition of Find definitions for: an•ti•world Pronunciation: (an'tē-wûrld", an'tī-), [key] — n. Often,a hypothetical world composed of antimatter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. antiwhite antixerophthalmic vitamin Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language