/ Dictionary / Index C Cassius: Meaning and Definition of Find definitions for: Cas•sius Pronunciation: (kash'us), [key] — n. a male given name. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cassius (Thesaurus) cassiterite Cassius Longinus Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language