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intrinsic factor

noun Biochemistry.
  1. 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for intrinsic factor

intrinsic factor

noun
  1. biochem a glycoprotein, secreted by the stomach, the presence of which is necessary for the absorption of cyanocobalamin (vitamin B 12) in the intestine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
intrinsic factor in Medicine

intrinsic factor

n.
  1. 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
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