/ Dictionary / Index D diketone: Meaning and Definition of Find definitions for: di•ke•tone Pronunciation: (dī-kē'tōn), [key] — n. Chem. a compound containing two C=O groups, as CHCOCOCH. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dike diktat 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