/ Dictionary / Index A Auxo: Meaning and Definition of Find definitions for: Aux•o Pronunciation: (ôk'sō), [key] — n. Class. Myth. one of the Graces worshiped at Athens. auxo- Pronunciation: [key] a combining form meaning “growth,” “increase,” used in the formation of compound words: auxochrome. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. auxin auxocardia Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language