Definition of narcolepsy noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈnɑːkəʊlepsi//
; NAmE NAmE//ˈnɑːrkoʊlepsi//
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a condition in which somebody falls into a deep sleep when they are in relaxing surroundings Word Origin late 19th cent.: from Greek narkē ‘numbness’, on the pattern of epilepsy.
See the Oxford Advanced American Dictionary entry: narcolepsy