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Deep sleep
Meaning
Noun
●
Used
other than
figuratively
or
idiomatically
: see
deep
, sleep.
●
In Medicine & Sleep:
stage 3 of non-rapid
eye
movement
sleep
●
In Fiction:
Artificially
induced
hibernation
in
humans
for the
purpose
of long
distance
space
travel.
Sourced from
Wiktionary
Synonyms
Cataphor
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