/ Dictionary / Index O oxide: Meaning and Definition of Find definitions for: ox•ide Pronunciation: (ok'sīd, -sid), [key] — n. Chem. a compound in which oxygen is bonded to one or more electropositive atoms. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oxide (Thesaurus) oxidative phosphorylation oxidimetry Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language