/ Dictionary / Index D dyarchy: Meaning and Definition of Find definitions for: dy•ar•chy Pronunciation: (dī'är-kē), [key] — pl. -chies. diarchy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dyarchy (Thesaurus) Dyak Dyaus Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language