beta-glucan
noun
beta-glu·can ˈbā-tə-ˈglü-ˌkan 
-kən
: any of several polysaccharides consisting of glucose units and including one found in endosperm cell walls of cereal grains (such as barley and oats)
Word History
First Known Use
1966, in the meaning defined above
Medical Definition
beta-glucan
noun
: any of several polysaccharides consisting of glucose units and including one found in endosperm cell walls of cereal grains (as barley and oats)