immune system

noun

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

Examples of immune system in a Sentence

Recent Examples on the Web Here too, the scientists were able to identify treatments, including the experimental cancer drug Ralimetinib, which may prevent the immune system overreaction. Mark Johnson, Milwaukee Journal Sentinel, "Study reveals images of the coronavirus forming tentacles in cells -- but monstrous discovery helps identify new treatment," 27 June 2020 Later on in disease, the greater danger becomes inflammation from a haywire immune system reaction. Gregory Barber, Wired, "Old Drugs Could Reveal a New Way to Attack the Coronavirus," 27 June 2020 Not only does the infrared heat penetrate 2.5 inches into the skin to reach muscles and joints, but the special heat system also promotes detoxification, immune system support, and relief from arthritis, rheumatism, and fibromyalgia. Hillary Maglin, Travel + Leisure, "These Saunas Make the Perfect Addition to Your Home Gym or Spa," 25 June 2020 Among the drugs that will be tested in combination with remdesivir are baricitinib and tocilizumab, both of which tamp down inflammation caused by the human immune system. Peter Fimrite, SFChronicle.com, "Gilead to study inhalable form of remdisivir — a possible COVID-19 breakthrough," 22 June 2020 That sensation happens as our immune system rallys in response to the virus, releasing chemicals called cytokines. Sandee Lamotte, CNN, "Covid-19 or migraine? Here's how to tell and what to do about it," 22 June 2020 How do these compare with drugs that are targeted to specific immune system molecules, which are also being tested against COVID-19? Tanya Lewis, Scientific American, "Common Steroid Could Be Cheap and Effective Treatment for Severe COVID-19," 17 June 2020 So far, federal testing has found the potential vaccine is safe in humans and is able to elicit an immune system response to infection. Anne Saker, Cincinnati.com, "Coronavirus in Ohio: UC will need 500 volunteers next month to test possible vaccine," 17 June 2020 Unraveling this mystery won’t be easy, considering the complexity of the immune system and its multiple layers of defense. Los Angeles Times, "How dexamethasone might lead researchers to better COVID-19 treatments," 17 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'immune system.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of immune system

circa 1919, in the meaning defined above

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Time Traveler for immune system

Time Traveler

The first known use of immune system was circa 1919

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Statistics for immune system

Last Updated

2 Jul 2020

Cite this Entry

“Immune system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immune%20system. Accessed 7 Jul. 2020.

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More Definitions for immune system

immune system

noun

English Language Learners Definition of immune system

: the system that protects your body from diseases and infections

immune system

noun

Kids Definition of immune system

: 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

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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