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Definition of "histamine" []

  • A physiologically active amine, C5H9N3, found in plant and animal tissue and released from mast cells as part of an allergic reaction in humans. It stimulates gastric secretion and causes dilation of capillaries, constriction of bronchial smooth muscle, and decreased blood pressure. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "histamine" in a sentence
  • "Beer, wine and liquor contain histamine, produced by yeast and bacteria during the fermentation process."
  • "During this retaliation, your body releases a chemical called histamine, which is the reason why your eyes will get teary and your nose starts to run."
  • "This was not found to be the case, however, when the experiment was repeated with cuddling but no kissing, with no change in histamine levels found."