/ Dictionary / Index D diaphorase: Meaning and Definition of Find definitions for: di•aph•o•rase Pronunciation: (dī-af'u-rās"), [key] — n. Biochem. a flavoprotein, found in mitochondria, that acts as an enzyme in catalyzing the oxidation of reduced NAD. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diaphone diaphoresis Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language