Definition of T cell in English:

T cell

Pronunciation /tē sel/ /ti sɛl/

Translate T cell into Spanish


  • A lymphocyte of a type produced or processed by the thymus gland and actively participating in the immune response.

    Also called T lymphocyte
    Compare with B cell

    ‘Granulomas occur as a result of a helper T cell Type 1 protective immune response and are dynamic structures.’
    • ‘For patients with a normal T cell immune system, less than 1% will develop a systemic infection.’
    • ‘They then migrate to lymph nodes to initiate an immune response in the T cell areas.’
    • ‘This T cell transformation process takes time, and only memory T cells can proliferate in response to a booster vaccination or a second infection.’
    • ‘The T cell will then be stimulated to respond and initiate the primary immune response.’


1970s from T for thymus.