SLEEP-WAKE CYCLE


Meaning of SLEEP-WAKE CYCLE in English

/sleep"wayk"/

Physiol. the species-specific biological pattern of alternating sleep and wakefulness, in humans roughly 8 hours of nocturnal sleep and 16 hours of daytime activity.

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .