/ Dictionary / Index A antiozonant: Meaning and Definition of Find definitions for: an•ti•o•zon•ant Pronunciation: (an"tē-ō'zō-nunt, an"tī-), [key] — n. Chem. an admixture to natural or synthetic rubber for preventing ozonolysis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. antioxidant antiparabema Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language