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fever

noun [C or U] (ILLNESS)
 
 
/ˈfiː.vər/ US  /-vɚ/

Definition

B1 a medical condition in which the body temperature is higher than usual and the heart beats very fast: He's got a headache and a slight fever.Fevers and infectious diseasesColds and flu
(Definition of fever noun (ILLNESS) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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