Definition of superantigen in English:

superantigen

noun

Medicine
  • 1rare An antigen complexed with RNA during processing by a macrophage (considered as a strong stimulus of an immune response).

  • 2Any of a class of foreign (exogenous) or self (endogenous) antigens causing excessive activation of T lymphocytes.

Origin

1960s. From super- + antigen.

Pronunciation

superantigen

/ˌsuːpərˈantɪdʒ(ə)n/ /ˌsjuːpərˈantɪdʒ(ə)n/