immune system
noun
: 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
Examples of immune system in a Sentence
Recent Examples on the Web
In some cases, if the worm dies, the body's immune system may clear the dead worm from the brain tissue without requiring surgery, unless complications arise.
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Allison Novelo, CBS News, 9 May 2024
Recombinant vaccines are generally safe to use in a large population of people—even those with chronic health problems or people who have weakened immune systems.
—Anju Goel, Verywell Health, 9 May 2024
See all Example Sentences for immune system 
Allison Novelo, CBS News, 9 May 2024
Recombinant vaccines are generally safe to use in a large population of people—even those with chronic health problems or people who have weakened immune systems.
—Anju Goel, Verywell Health, 9 May 2024
See all Example Sentences for immune system
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'immune system.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Immune system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immune%20system. Accessed 16 May. 2024.
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