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1. (n.) histamine
a 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.
Etymology: (1910–15; hist (idine ) +amine)
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| Definition of 'histamine' |
Princeton's WordNet |
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1. (noun) histamine
amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the human immune system during allergic reactions
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| Definition of 'histamine' |
U.S. National Library of Medicine |
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1. histamine
An amine derived by enzymatic decarboxylation of HISTIDINE. It is a powerful stimulant of gastric secretion, a constrictor of bronchial smooth muscle, a vasodilator, and also a centrally acting neurotransmitter.
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Definitions of histamine 
