/ Dictionary / Index O oxygenate: Meaning and Definition of Find definitions for: ox•y•gen•ate Pronunciation: (ok'si-ju-nāt"), [key] — -at•ed, -at•ing. to treat, combine, or enrich with oxygen: to oxygenate the blood. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oxygenate (Thesaurus) oxygenase oxygen cycle Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language