/ Dictionary / Index A antimonyl: Meaning and Definition of Find definitions for: an•ti•mo•nyl Pronunciation: (an'tu-mu-nil, an-tim'u-), [key] — n. Chem. the univalent group –SbO, believed to exist in certain compounds, as antimony potassium tartrate, K(SbO)CHO. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. antimony hydride antimony oxychloride Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language