/ Dictionary / Index D diadochy: Meaning and Definition of Find definitions for: di•ad•o•chy Pronunciation: (dī-ad'u-kē), [key] — n. Crystall. the ability of certain different elements to exist in place of each other in certain points of a space lattice; isomorphism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diadochokinesia diadromous Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language