Dictionary  slow'-wave' sleep"Pronunciation: (slō'wāv'), [key] Physiol. a recurrent period of deep sleep, typically totaling five or six hours a night, distinguished by the presence of slow brain waves and by very little dreaming. Also called S sleep. Cf. REM sleep. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
|
Atlas
Encyclopedia
Dictionary
Thesaurus
Day in History
