/ Dictionary / Index C Clement XIII: Meaning and Definition of Find definitions for: Clement XIII Pronunciation: [key] — (Carlo della Torre Rezzonico) 1693–1769, Italian ecclesiastic: pope 1758–69. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Clement XII Clement XIV Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language