ˈsisəs noun
Etymology: New Latin, from Greek kissos ivy
1. capitalized : a large genus of widely distributed chiefly tropical woody vines (family Vitaceae) related to the grape but differing especially in having tetramerous flowers with expanding separate petals and largely persistent foliage and often fleshy or somewhat succulent leaves
2. plural cissus : any plant of the genus Cissus — see marine ivy