/ Dictionary / Index D diaconal: Meaning and Definition of Find definitions for: di•ac•o•nal Pronunciation: (dī-ak'u-nl), [key] — adj. pertaining to a deacon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diacid diaconate Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language