/ Dictionary / Index D dipyramid: Meaning and Definition of Find definitions for: di•pyr•a•mid Pronunciation: (dī-pir'u-mid), [key] — n. Crystall. bipyramid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diptych dipyridamole 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