/ Dictionary / Index D diseased: Meaning and Definition of Find definitions for: dis•eased Pronunciation: (di-zēzd'), [key] — adj. having or affected with disease. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diseased (Thesaurus) disease diseconomy Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language