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Medical Dictionary

antigen

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noun an·ti·gen \ˈant-i-jən\

Medical Definition of antigen

  1. :  any substance (as an immunogen or a hapten) foreign to the body that evokes an immune response either alone or after forming a complex with a larger molecule (as a protein) and that is capable of binding with a product (as an antibody or T cell) of the immune response

antigenic \ˌant-i-ˈjen-ik\play adjective
antigenically \-i-k(ə-)lē\play adverb


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