insomnia

Definitions


[ɪnˈsɒmnɪə], (Noun)

Definitions:
- habitual sleeplessness; inability to sleep
(e.g: I have been suffering from insomnia)


Phrases:

Origin:
early 17th century: from Latin, from insomnis ‘sleepless’, from in- (expressing negation) + somnus ‘sleep’




definition by Oxford Dictionaries