Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun rapid_eye_movement_sleep

1 sense of rapid eye movement sleep

Sense 1
paradoxical sleep, rapid eye movement sleep, REM sleep, rapid eye movement, REM -- (a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep)
       => sleep, slumber -- (a natural and periodic state of rest during which consciousness of the world is suspended; "he didn't get enough sleep last night"; "calm as a child in dreamless slumber")