1 continuing for a long time; constantly recurring
2 (of a disease) developing slowly, or of long duration
3 inveterate; habitual
a chronic smoker
a very bad
the play was chronic
b very serious he left her in a chronic condition (C15: from Latin chronicus relating to time, from Greek khronikos, from khronos time)
chronic fatigue syndrome
n a condition characterized by painful muscles and general weakness, sometimes persisting long after a viral illness, (Also called)
myalgic encephalomyelitis, postviral syndrome (Abbrev.)
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