Dictionary
2 ENTRIES FOUND:

rapid eye movement

noun

Definition of RAPID EYE MOVEMENT

:  a rapid conjugate movement of the eyes associated especially with REM sleep

First Known Use of RAPID EYE MOVEMENT

1916

rapid eye movement

noun rap·id eye movement \ˈrap-əd-\   (Medical Dictionary)

Medical Definition of RAPID EYE MOVEMENT

:  a rapid conjugate movement of the eyes associated especially with REM sleep—called also REM

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