Dictionary

immune system

noun

: the system that protects your body from diseases and infections

Full Definition of IMMUNE SYSTEM

:  the bodily system that protects the body from foreign substances, cells, and tissues by producing the immune response and that includes especially the thymus, spleen, lymph nodes, special deposits of lymphoid tissue (as in the gastrointestinal tract and bone marrow), macrophages, lymphocytes including the B cells and T cells, and antibodies

First Known Use of IMMUNE SYSTEM

circa 1919

immune system

noun    (Medical Dictionary)

Medical Definition of IMMUNE SYSTEM

:  the bodily system that protects the body from foreign substances, cells, and tissues by producing the immune response and that includes especially the thymus, spleen, lymph nodes, special deposits of lymphoid tissue (as in the gastrointestinal tract and bone marrow), lymphocytes including the B cells and T cells, and antibodies

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