/ Dictionary / Index C Caius: Meaning and Definition of Find definitions for: Ca•ius Pronunciation: (kā'us), [key] died a.d. 296, pope 283–296. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Caitlin Cajan Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language