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单词 histamine
释义

WordReference Random House Unabridged Dictionary of American English © 2024
his•ta•mine  (his′tə mēn′, -min),USA pronunciation n. 
  1. Physiologya histidine-derived amine compound that is released mainly by damaged mast cells in allergic reactions, causing dilation and permeability of blood vessels and lowering blood pressure.
  2. Drugs[Pharm.]a commercial form of this compound, obtained from histidine and used chiefly in the diagnosis of gastric and circulatory functions. Cf. antihistamine.
Also, his•ta•min (his′tə min).USA pronunciation 
  • 1910–15; hist(idine) + -amine
his•ta•min•ic  (his′tə min′ik),USA pronunciation adj. 
Collins Concise English Dictionary © HarperCollins Publishers::
histamine /ˈhɪstəˌmiːn -mɪn/ n
  1. an amine formed from histidine and released by the body tissues in allergic reactions, causing irritation. It also stimulates gastric secretions, dilates blood vessels, and contracts smooth muscle. Formula: C5H9N3
Etymology: 20th Century: from hist( idine) + -amine

histaminic /ˌhɪstəˈmɪnɪk/ adj
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