intrinsic factor


noun Biochemistry.

a glycoprotein, secreted by the gastric mucosa, that is involved in the intestinal absorption of vitamin B12.

Origin of intrinsic factor

First recorded in 1925–30

British Dictionary definitions for intrinsic factor

intrinsic factor

noun

biochem a glycoprotein, secreted by the stomach, the presence of which is necessary for the absorption of cyanocobalamin (vitamin B 12) in the intestine

Medical definitions for intrinsic factor

intrinsic factor

n.

A relatively small mucoprotein secreted by the parietal cells of gastric glands and required for adequate absorption of vitamin B12 for production of red blood cells. Castle's intrinsic factor