/ Dictionary / Index D Dias: Meaning and Definition of Find definitions for: Di•as Pronunciation: (dē'us Port. dē'ush), [key] c1450–1500, Portuguese navigator: discoverer of the Cape of Good Hope. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dias (Thesaurus) diary diaschisis Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language