/ Dictionary / Index D diprotic: Meaning and Definition of Find definitions for: di•prot•ic Pronunciation: (dī-prot'ik), [key] — adj. Chem. (of an acid) having two transferable protons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dippy dipsacaceous Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language