Learner's Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
My Saved Words
Login
×
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Most Popular
My Saved Words
Log in
Learner's Dictionary
REM sleep
1 ENTRIES FOUND:
REM sleep
(noun)
Save
REM sleep
noun
REM sleep
noun
Learner's definition of REM SLEEP
[
noncount
]
:
a stage of sleep during which you dream and your eyes make quick movements
—
called also
rapid eye movement sleep
,
REM
Comments & Questions
Comments & Questions
What made you want to look up
REM sleep
? Include any comments and questions you have about this word.
Please enable JavaScript to view the
comments powered by Disqus.
ASK THE EDITOR
What is the difference between 'effect' and 'affect'?
See the answer »
LEARNER'S QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
LEARNER'S WORD OF THE DAY
incentive
:
something that encourages a person to do something
Learn More »