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orthochromatic film
Orthoclase
Orthoclastic
Orthodiagonal
Orthodome
orthodontia
orthodontic
orthodontic treatment
orthodontics
orthodontist
orthodonture
Orthodox
Orthodox Catholic Church
Orthodox Church
Orthodox Jew
Orthodox Judaism
-- orthodox sleep --
Orthodoxal
Orthodoxality
Orthodoxally
Orthodoxastical
Orthodoxical
Orthodoxly
Orthodoxness
Orthodoxy
Orthodromic
Orthodromics
Orthodromy
Orthoepic
orthoepist
orthoepy
orthogamy
Orthognathic
orthodox sleep
Noun
1.
orthodox sleep
-
a
recurring
sleep
state
during
which
rapid
eye
movements
do
not
occur
and
dreaming
does
not
occur
;
accounts
for
about
75
%
of
normal
sleep
time
Synonyms:
nonrapid eye movement
,
nonrapid eye movement sleep
,
NREM
,
NREM sleep
nonrapid
eye
movement
,
nonrapid
eye
movement
sleep
,
NREM
,
NREM
sleep
,
sleep
,
slumber
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