/ Dictionary / Index O oxyhydrogen: Meaning and Definition of Find definitions for: ox•y•hy•dro•gen Pronunciation: (ok"si-hī'dru-jun), [key] — adj. pertaining to or involving a mixture of oxygen and hydrogen. —n. a mixture of oxygen and hydrogen, used in a blowtorch for welding steel plates or the like. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oxyhemoglobin oxymetazoline Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language