/ Dictionary / Index P peroxidate: Meaning and Definition of Find definitions for: per•ox•i•date Pronunciation: (pu-rok'si-dāt"), [key] — -dat•ed, -dat•ing. peroxidize. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. peroxidase peroxide Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language