American English

Definition of histamine noun from the Oxford Advanced American Dictionary

 

histamine

 noun
noun
NAmE//ˈhɪstəˌmin//
 
, NAmE//ˈhɪstəmən//
 
[uncountable] (medical)
 
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a chemical substance that is given out in the body in response to an injury or an allergy see also antihistamine
See the Oxford Advanced Learner's Dictionary entry: histamine