Definitions for histamineˈhɪs təˌmin, -mɪn

This page provides all possible meanings and translations of the word histamine

Random House Webster's College Dictionary

his•ta•mineˈhɪs təˌmin, -mɪn(n.)

  1. 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.

    Category: Physiology

Origin of histamine:

1910–15; hist (idine ) +amine

his`ta•min′ic-ˈmɪn ɪk(adj.)

Princeton's WordNet

  1. histamine(noun)

    amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the human immune system during allergic reactions


  1. histamine(Noun)

    An amine, CHN, 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.

  2. Origin: From histidine + amine.


  1. Histamine

    Histamine is an organic nitrogen compound involved in local immune responses as well as regulating physiological function in the gut and acting as a neurotransmitter. Histamine triggers the inflammatory response. As part of an immune response to foreign pathogens, histamine is produced by basophils and by mast cells found in nearby connective tissues. Histamine increases the permeability of the capillaries to white blood cells and some proteins, to allow them to engage pathogens in the infected tissues.

U.S. National Library of Medicine

  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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