/ Dictionary / Index O oxidizer: Meaning and Definition of Find definitions for: ox•i•diz•er Pronunciation: (ok'si-dī"zur), [key] — n. Chem. oxidant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oxidizer (Thesaurus) oxidize oxidizing agent Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language