from The American Heritage® Dictionary of the English Language, 4th Edition

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

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A substance that causes cells to clump.
  • n. A protein found in cow's milk.

from The Century Dictionary and Cyclopedia

  • n. An adaptation-product produced by immunization with the corresponding cells (red blood-corpuscles or bacteria), which causes the clumping or coalescence of the cells used in immunization.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an antibody that causes agglutination of a specific antigen


agglutin(ation) + -in.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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