[noun] [C] - a state of unconsciousness from which a person cannot be woken, which is caused by damage to the brain after an accident or illnessHe has been in a coma for the past six weeks.She went into a deep coma after taking an overdose of sleeping pills.
COMA
Meaning of COMA in English
Cambridge English vocab. Кембриджский английский словарь. 2012