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operculum
XDict
n
. 果蓋,鰓蓋
PyDict
果蓋,鰓蓋
WordNet
(
r
)
3
.
0
(
2006
) (
WordNet
)
operculum
n
1
:
a
hard
flap
serving
as
a
cover
for
(
a
)
the
gill
slits
in
fishes
or
(
b
)
the
opening
of
the
shell
in
certain
gastropods
when
the
body
is
retracted
The
Collaborative
International
Dictionary
of
English
v
.
0
.
48
(
gcide
)
Operculum
\
O
*
per
"
cu
*
lum
\,
n
.;
pl
.
L
. {
Opercula
},
E
.
{
Operculums
}. [
L
.,
a
cover
or
lid
,
fr
.
operire
to
cover
.]
1
. (
Bot
.)
(
a
)
The
lid
of
a
pitcherform
leaf
.
(
b
)
The
lid
of
the
urnlike
capsule
of
mosses
.
[
1913
Webster
]
2
. (
Anat
.)
(
a
)
Any
lidlike
or
operculiform
process
or
part
;
as
,
the
opercula
of
a
dental
follicle
.
(
b
)
The
fold
of
integument
,
usually
supported
by
bony
plates
,
which
protects
the
gills
of
most
fishes
and
some
amphibians
;
the
gill
cover
;
the
gill
lid
.
(
c
)
The
principal
opercular
bone
in
the
upper
and
posterior
part
of
the
gill
cover
.
[
1913
Webster
]
3
. (
Zool
.)
(
a
)
The
lid
closing
the
aperture
of
various
species
of
shells
,
as
the
common
whelk
.
See
Illust
.
of
{
Gastropoda
}.
(
b
)
Any
lid
-
shaped
structure
closing
the
aperture
of
a
tube
or
shell
.
[
1913
Webster
]
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