Breadcrumb Home > Dictionary > Index D Dior: Meaning and Definition of Find definitions for: Di•or Pronunciation: (dē-ôr' Fr. dē-ôr'), [key] 1905–57, French fashion designer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dior (Thesaurus) dioptrics diorama ✖ Related Content Daily Word Quiz: quadrumanous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language