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Medical Dictionary

thymus

play
noun thy·mus \ˈthī-məs\

Medical Definition of thymus

plural thymuses also thymi \-ˌmī\play

  1. :  a glandular structure of largely lymphoid tissue that functions in cell-mediated immunity by being the site where T cells develop, that is present in the young of most vertebrates typically in the upper anterior chest or at the base of the neck, that arises from the epithelium of one or more embryonic branchial clefts, and that gradually decreases in size and activity after puberty



Variants of thymus

or thymus gland

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