/ Dictionary / Index D dithionate: Meaning and Definition of Find definitions for: di•thi•o•nate Pronunciation: (dī-thī'u-nāt", -nit), [key] — n. Chem. a salt of dithionic acid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dither dithionic Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language