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

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Examples of histamine in a Sentence

Recent Examples on the Web

In a person suffering from allergies, though, excessive IgE stimulates a disproportionate release of histamine. Sam Roberts, New York Times, "Dr. Teruko Ishizaka, Who Advanced Allergy Treatment, Dies at 92," 13 June 2019 In the case of allergies, chemicals like histamine, which your immune system produces in response to an allergen, can also induce sneezing. Carolyn L. Todd, SELF, "Quick Question: Why Do We Sneeze?," 8 Mar. 2019 So can applying a hydrocortisone cream or calamine lotion (to ease inflammation and irritation) and taking an oral antihistamine (to combat your body’s release of histamine, the chemical involved in allergic reactions). Korin Miller, SELF, "7 Tips to Prevent Bee and Wasp Stings When Exploring the Great Outdoors," 10 Oct. 2018 This is because histamine levels increase with maturation. Krissy Brady, SELF, "Is Your Food Allergy Really a Histamine Intolerance?," 27 July 2018 Foods high in vitamin C are known to combat inflammation, though Dr. Gluckman is skeptical that eating loads of oranges will lessen the swelling from a bite, since vitamin C doesn’t impact histamines, chemicals that trigger the immune system. Heidi Mitchell, WSJ, "Is There an Alternative Way to Prevent Bug Bites?," 28 July 2018 This causes the immune system to stop making so many symptom-inducing IgE antibodies and to switch to IgG antibodies, which don’t trigger the release of histamine. Amber Dance, Washington Post, "Peanut allergy is one of the most severe food allergies. New therapies might help.," 12 May 2018 On the second and subsequent occasions when peanut protein comes along, the mast cells recognize it and start producing histamine and other immune compounds. Amber Dance, Washington Post, "Peanut allergy is one of the most severe food allergies. New therapies might help.," 12 May 2018 Earlier experiments in which people breathed in histamine found that just 24.5μg could affect breathing. Beth Mole, Ars Technica, "More nightmare fuel: Bedbugs create cesspool of poop and histamine in your bed," 14 Feb. 2018

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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Dictionary Entries near histamine

hist

hist-

histaminase

histamine

histamine flare

histaminergic

histe

Statistics for histamine

Last Updated

21 Jun 2019

Look-up Popularity

Time Traveler for histamine

The first known use of histamine was circa 1913

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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 histaminic (audio) \ adjective

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More from Merriam-Webster on histamine

Rhyming Dictionary: Words that rhyme with histamine

Britannica English: Translation of histamine for Arabic Speakers

Britannica.com: Encyclopedia article about histamine

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