/ 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: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language