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English definition of “Chronic Fatigue Syndrome”

Chronic Fatigue Syndrome

noun [U]  /ˈkrɑn·ɪk fəˈtiɡ ˌsɪn·droʊm/ us  
a group of illnesses that cause people to be extremely tired
(Definition of Chronic Fatigue Syndrome from the Cambridge Academic Content Dictionary © Cambridge University Press)
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