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
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First Known Use of IMMUNE SYSTEM

circa 1919
IMMUNE SYSTEM Defined for Kids

immune system

noun

Definition of IMMUNE SYSTEM for Kids

:  the system of the body that fights infection and disease and that includes especially the white blood cells and antibodies and the organs that produce them
Medical Dictionary

immune system

noun

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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