/ Dictionary / Index A antiauxin: Meaning and Definition of Find definitions for: an•ti•aux•in Pronunciation: (an"tē-ôk'sin, an"tī-), [key] — n. Biochem. a substance that inhibits the growth-regulating function of an auxin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. antiatom antibacchius Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language