Definition of REM sleep in English:

REM sleep

Syllabification: REM sleep
Pronunciation: /ˈrem ˌslēp


  • A kind of sleep that occurs at intervals during the night and is characterized by rapid eye movements, more dreaming and bodily movement, and faster pulse and breathing.
    More example sentences
    • It happens during three distinct periods during the night called rapid eye movement or REM sleep.
    • The increase in the power of LF component during the postapneic hyperventilation was significantly more pronounced in non-REM sleep than in REM sleep.
    • Patient reports of dreams experienced during REM sleep tend to be bizarre and detailed, with storyline plot associations.

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a slit made by cutting with a saw