/ Dictionary / Index D diagraph: Meaning and Definition of Find definitions for: di•a•graph Pronunciation: (dī'u-graf", -gräf"), [key] — n. a device for drawing, used in reproducing outlines, plans, etc., mechanically on any desired scale. a combined protractor and scale. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diagrammatic diakinesis Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language