Beta-glucan Definition

bā′tə-glo͞o ′ kăn′ -kən
noun
Any of various polysaccharides, such as cellulose, that are composed of glucose monomers and are found chiefly in the cell walls of fungi and plants, especially oats and barley. Beta-glucans are added to foods as a source of dietary fiber and are used as dietary supplements.
American Heritage Medicine