histamine

noun
his·​ta·​mine | \ ˈhi-stə-ˌmēn How to pronounce histamine (audio) , -mən \

Definition of histamine

: 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

Examples of histamine in a Sentence

Recent Examples on the Web The thinking here, Dr. Tracey said, was that famotidine, as a histamine receptor blocker, is structured in a way that could prevent the coronavirus from replicating. Amber Brenza, Health.com, 5 Oct. 2020 When they are exposed to the pollen the IgE antibody recognizes the pollen and causes the body to release histamine and other substances that cause sneezing, itching, and swelling. Ben Flanagan | Bflanagan@al.com, al, 1 Apr. 2021 One theory is that an overactive immune system can cause the release of histamine, similar to what happens when the body encounters an allergen. Allyson Chiu, Washington Post, 2 Dec. 2020 It's also thought that famotidine's antagonism of the histamine-2 receptor—limiting the body's histamine response—could lessen more serious outcomes. Amber Brenza, Health.com, 5 Oct. 2020 Humans do have the histamine system to transport cellular water to various parts of the cells, tissues, and organs. Kimberly Wilson, Essence, 30 May 2020 The protein molecules from the protective coating leach into your tissues, and your body reacts by triggering the release of histamines. John Schandelmeier, Anchorage Daily News, 16 May 2020 The production of histamine can cause runny nose, watery eyes, itching, swelling, and other symptoms. Adele Jackson-gibson, Good Housekeeping, 24 Mar. 2020 These meds are generally fast-acting, and work by blocking histamines, the chemicals in your body that turn you into a sneezy, dripping mess. Lisa Bain, Good Housekeeping, 31 Mar. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'histamine.' 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 histamine

circa 1913, in the meaning defined above

History and Etymology for histamine

International Scientific Vocabulary hist- + amine

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Learn More About histamine

Time Traveler for histamine

Time Traveler

The first known use of histamine was circa 1913

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Statistics for histamine

Last Updated

8 May 2021

Cite this Entry

“Histamine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/histamine. Accessed 20 Jun. 2021.

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More Definitions for histamine

histamine

noun

English Language Learners Definition of histamine

medical : a chemical substance in the body that causes the symptoms that people experience when they are allergic to something

histamine

noun
his·​ta·​mine | \ ˈhis-tə-ˌmēn How to pronounce histamine (audio) , -mən How to pronounce histamine (audio) \

Medical Definition of histamine

: a compound C5H9N3 especially of mammalian tissues that causes dilatation 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

Other Words from histamine

histaminic \ ˌhis-​tə-​ˈmin-​ik How to pronounce histamine (audio) \ adjective

More from Merriam-Webster on histamine

Britannica English: Translation of histamine for Arabic Speakers

Britannica.com: Encyclopedia article about histamine

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