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English definition of “chronic”

chronic

adjective  /ˈkrɑn·ɪk/ us  
(esp. of a disease or something bad) continuing for a long time: Mr. George is resigning because of chronic heart disease. There is a chronic shortage of teachers.
chronically
adverb  /ˈkrɑn·ɪk·li/ us  
The hospital provides care to chronically ill patients for as long as they need it.
(Definition of chronic from the Cambridge Academic Content Dictionary © Cambridge University Press)
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