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polysaccharide pol·y·sac·cha·ride (pŏl'ē-sāk'ə-rīd') or pol·y·sac·cha·rid (-rĭd) or pol·y·sac·cha·rose (-rōs', -rōz')
Any of a class of carbohydrates, such as starch and cellulose, consisting of a number of monosaccharides joined by glycosidic bonds. Also called glycan.
Any of a class of carbohydrates that are made of long chains of simple carbohydrates (called monosaccharides). Starch and cellulose are polysaccharides. Compare monosaccharide, oligosaccharide.