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English definition of “coma”

coma

noun [C]     /ˈkəʊ.mə/ US  /ˈkoʊ-/
a state in which a person is unconscious and cannot be woken, caused by damage to the brain after an accident or illness: He's been in a coma for the past six weeks. She went into a deep coma after taking an overdose of sleeping pills.Disorders of muscles and the nervous systemLosing consciousness
(Definition of coma noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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