• Histamine

    Pronunciation

    • IPA: /ˈhɪstÉ™miːn/

    Origin

    From histidine + amine.

    Full definition of histamine

    Noun

    histamine

    (plural histamines)
    1. (neurotransmitter) An amine, C5H9N3, formed by decarboxylation of histidine, that causes dilatation of capillaries, contraction of smooth muscle, and stimulation of gastric acid secretion; it is released during allergic reactions.
      • 2001, Leslie Iversen, Drugs: A Very Short Introduction (Oxford 2001, p. 46)The intake of food triggers a release of histamine, which activates the acid-secreting cells.

    Derived terms

    © Wiktionary