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having a valence of four.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


Having the combining power (valency) of four.
Synonym(s): tetravalent
Farlex Partner Medical Dictionary © Farlex 2012


1. Chemistry Having valence 4.
2. Immunology
a. Having four sites of attachment. Used of an antibody or antigen.
b. Containing antigens from four strains of a microorganism or virus. Used of a vaccine or serum.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


Having the combining power (valency) of four.
Synonym(s): tetravalent.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012