pol·y·sac·cha·ride 
(pŏl′ē-săkə-rīd′) also pol·y·sac·cha·rid (-rĭd) or pol·y·sac·cha·rose (-rōs′, -rōz′)
(pŏl′ē-săkə-rīd′) also pol·y·sac·cha·rid (-rĭd) or pol·y·sac·cha·rose (-rōs′, -rōz′)n.
Any of a class of carbohydrates, such as starch and cellulose, consisting of a number of monosaccharides joined by glycosidic bonds.