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[hap-ten] /ˈhæp tɛn/
noun, Immunology.
a substance having a single antigenic determinant that can react with a previously existing antibody but cannot stimulate more antibody production unless combined with other molecules; a partial antigen.
Also, haptene
[hap-teen] /ˈhæp tin/ (Show IPA)
Origin of hapten
1920-25; < German < Greek hápt(ein) to grasp + German -en -ene Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for hapten


(immunol) an incomplete antigen that can stimulate antibody production only when it is chemically combined with a particular protein
Word Origin
C20: from German, from Greek haptein to fasten
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
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hapten in Medicine

hapten hap·ten (hāp'tən)
A substance that is capable of reacting with a specific antibody but cannot induce the formation of antibodies unless bound to a carrier protein or other molecule. Also called incomplete antigen, partial antigen.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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