hypersensitivity Definition in the Cambridge English Dictionary
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Definition of “hypersensitivity” - English Dictionary

Definition of "hypersensitivity" - British English Dictionary

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hypersensitivitynoun [U]

uk   /ˌhaɪ.pə.sens.əˈtɪv.ə.ti/  us   /ˌhaɪ.pərˌsen.səˈtɪv.ə.t̬i/ specialized
a ​condition in which the ​immunesystemreacts 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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