lam·i·nar·in \ˌ ̷ ̷ ̷ ̷ˈna(a)rə̇n\noun (-s) Etymology: International Scientific Vocabulary laminar- (from New Latin Laminaria) + -in : a polysaccharide found in various brown algae that like starch yields only glucose on hydrolysis but differs from starch in molecular structure and properties