/ Dictionary / Index O oxymetazoline: Meaning and Definition of Find definitions for: ox•y•me•taz•o•line Pronunciation: (ok"sē-mu-taz'u-lēn", -met'u-zō-), [key] — n. Pharm. a sympathomimetic drug, CHNO, used as a topical, long-lasting nasal decongestant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oxyhydrogen oxymoron 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