/ Dictionary / Index D diecious: Meaning and Definition of Find definitions for: di•e•cious Pronunciation: (dī-ē'shus), [key] — adj. Biol. dioecious. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. die casting Diefenbaker 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