hypersensitivity Definition in British English Dictionary
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Definition of "hypersensitivity" - British English Dictionary

hypersensitivitynoun [U]

uk   /ˌhaɪ.pə.sens.əˈtɪv.ə.ti/  us   /ˌhaɪ.pərˌsen.səˈtɪv.ə.t̬i/ specialized
a condition in which the immune system reacts in an extreme way to a substance in the body: Acute hypersensitivity, resulting in vomiting or diarrhoea, can be a reaction to allergies to foods such as nuts or shellfish.
(Definition of hypersensitivity from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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