Definition of "agglutinin" [agglutinin]

• A substance, such as an antibody, that is capable of causing agglutination of a particular antigen, especially red blood cells or bacteria. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "There is at least test-tube evidence that lectins in grains, such as wheat germ agglutinin, bind to hormone receptors including those for insulin and leptin and create mischief."
• "Hager turning:archenemy,larder.agglutinin McDonald …"
• "University of Melbourne to do research work on the agglutinin reactions in typhoid fever."