/ Dictionary / Index C cissus: Meaning and Definition of Find definitions for: cis•sus Pronunciation: (sis'us), [key] — n. any of numerous tropical and subtropical vines of the genus Cissus, including the grape ivy and the kangaroo vine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cissoid Cissy Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language