Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

hapten

play
noun hap·ten \ˈhap-ˌten\

Definition of hapten

  1. :  a small separable part of an antigen that reacts specifically with an antibody but is incapable of stimulating antibody production except in combination with a carrier protein molecule

haptenic play \hap-ˈte-nik\ adjective


Origin of hapten

German, from Greek haptein to fasten


First Known Use: 1921


Medical Dictionary

hapten

play
noun hap·ten \ˈhap-ˌten\

Medical Definition of hapten

  1. :  a small separable part of an antigen that reacts specifically with an antibody but is incapable of stimulating antibody production except in combination with an associated protein molecule

haptenic \hap-ˈten-ik\play adjective
haptenated \ˈhap-tə-ˌnāt-əd\play adjective



Learn More about hapten

  1. Medical Dictionary: Definition of "hapten" Britannica.com: Encyclopedia article about "hapten"


Seen and Heard

What made you want to look up hapten? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

tending to dismiss important matters

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

perplex reduce disapprove soothe
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ