slow-wave sleep

[ sloh-weyv ]
/ ˈsloʊˈweɪv /

noun Physiology.

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.

Nearby words

  1. slow-reacting substance of anaphylaxis,
  2. slow-release,
  3. slow-scan television,
  4. slow-twitch,
  5. slow-up,
  6. slow-witted,
  7. slowcoach,
  8. slowdown,
  9. slowly,
  10. slowness

Compare REM sleep.

Origin of slow-wave sleep

First recorded in 1965–70

Also called S sleep.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019