narcolepsyPronunciation: /ˈnɑːkə(ʊ)lɛpsi/Definition of narcolepsy noun [mass noun] Medicine a condition characterized by an extreme tendency to fall asleep whenever in relaxing surroundings. Derivatives narcolepticPronunciation: /-ˈlɛptɪk/ adjective & noun Origin: late 19th century: from Greek narkē 'numbness', on the pattern of epilepsynarcolepsy in other Oxford dictionaries Definition of narcolepsy in the US English dictionary
