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histamine
noun
his·ta·mine ˈhi-stə-ˌmēn 
-mən
: a compound C5H9N3 especially of mammalian tissues that causes dilation of capillaries, contraction of smooth muscle, and stimulation of gastric acid secretion, that is released during allergic reactions, and that is formed by decarboxylation of histidine
Example Sentences
Recent Examples on the Web The body’s histamine response is attempting to dilute the offending allergen. 
Patricia A. Macculloch, The Conversation, 12 Aug. 2022 Contact with an allergen provokes the immune system to disperse histamine into the blood. Patricia A. Macculloch, The Conversation, 12 Aug. 2022 These headaches seem to be linked to the sudden release of histamine or serotonin in the body. Korin Miller, SELF, 14 July 2022 Magnesium also helps with the production of histamine. The Salt Lake Tribune, 9 June 2022 It’s the histamine that causes the itch and the swollen blotches. New York Times, 9 May 2022 Antihistamines are medications that block the release of histamine, the compound your body produces that’s responsible for your allergy symptoms, per the U.S. National Library of Medicine. Korin Miller, SELF, 25 Jan. 2022 This is because, in response to an allergy trigger, your immune system’s mast cells release histamine, a chemical that can cause itching along with other allergy symptoms, according to the American Academy of Allergy, Asthma & Immunology. Marygrace Taylor, SELF, 4 Nov. 2021 These drugs work by blocking histamine, the chemical produced by the immune system during an allergic reaction. Ashley Abramson, Health.com, 7 Sep. 2021 See More
Patricia A. Macculloch, The Conversation, 12 Aug. 2022 Contact with an allergen provokes the immune system to disperse histamine into the blood. Patricia A. Macculloch, The Conversation, 12 Aug. 2022 These headaches seem to be linked to the sudden release of histamine or serotonin in the body. Korin Miller, SELF, 14 July 2022 Magnesium also helps with the production of histamine. The Salt Lake Tribune, 9 June 2022 It’s the histamine that causes the itch and the swollen blotches. New York Times, 9 May 2022 Antihistamines are medications that block the release of histamine, the compound your body produces that’s responsible for your allergy symptoms, per the U.S. National Library of Medicine. Korin Miller, SELF, 25 Jan. 2022 This is because, in response to an allergy trigger, your immune system’s mast cells release histamine, a chemical that can cause itching along with other allergy symptoms, according to the American Academy of Allergy, Asthma & Immunology. Marygrace Taylor, SELF, 4 Nov. 2021 These drugs work by blocking histamine, the chemical produced by the immune system during an allergic reaction. Ashley Abramson, Health.com, 7 Sep. 2021 See More Word History
Etymology
International Scientific Vocabulary hist- + amine
First Known Use
circa 1913, in the meaning defined above
Time Traveler
The first known use of histamine was circa 1913 👨🏻🏫 Mr. Ng 韋氏詞典 📚 – mw.mister5️⃣.net
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