Medical Dictionary
slow–wave sleep
noun
Medical Definition of SLOW-WAVE SLEEP
: a state of deep usually dreamless sleep that occurs regularly during a normal period of sleep with intervening periods of REM sleep and that is characterized by delta waves and a low level of autonomic physiological activity—called also non-REM sleep, NREM sleep, orthodox sleep, S sleep, synchronized sleep
Seen & Heard
What made you want to look up slow-wave sleep? Please tell us where you read or heard it (including the quote, if possible).