Atrium
Definition of Atrium
A´tri`um
n.
1.
(Arch.)
A
square
hall
lighted
from
above
,
into
which
rooms
open
at
one
or
more
levels
.
2.
(Anat.)
The
main
part
of
either
auricle
of
the
heart
as
distinct
from
the
auricular
appendix
.
Also
,
the
whole
articular
portion
of
the
heart
.
3.
(Zool.)
A
cavity
in
ascidians
into
which
the
intestine
and
generative
ducts
open
,
and
which
also
receives
the
water
from
the
gills
.
See
Ascidioidea
.
4.
(Anat.)
A
cavity
,
entrance
,
or
passage
;
as
,
the
atrium
,
or
atrial
cavity
,
in
the
body
wall
of
the
amphioxus
;
an
atrium
of
the
infundibula
of
the
lungs
,
etc
.
Related Words
atrium
cordis
,
atrium
of
the
heart
,
chamber
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Atony
Atop
Atrabilarian
Atrabiliar
Atrabiliary
Atrabiliary arteries
Atrabiliary capsule
Atrabilious
Atramentaceous
Atramental
Atramentarious
Atrede
Atrenne
Atresia
Atrial
Atrichornis
Atrichornithidae
atrioventricular
Atrip
Atriplex
-Atrium-
Atrocha
Atrocious
atrociousness
Atrocity
Atropa
Atrophic
Atrophied
Atrophy
Atropia
Atropine
Atropism
Atropous
Atrous
Atrypa
Attabal
Attacca
Attach
Attachable
Attache
attached
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