Histamine Definition
 hĭstə-mēn, -mĭn 
  histamines
  
    noun
  
 An amine, C5H9N3, produced by the decarboxylation of histidine and found in all organic matter: it is released by the tissues in allergic reactions, lowers the blood pressure by dilating blood vessels, stimulates gastric secretion, etc.
 Webster's New World 
Other Word Forms of Histamine
Noun
Singular:
 histaminePlural:
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