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4 definitions found
From:
DICT.TW English-Chinese Dictionary 英漢字典
the·ca
/ˈθikə/
囊,膜,鞘
From:
DICT.TW English-Chinese Medical Dictionary 英漢醫學字典
the·ca
/ˈθɪkə/
名詞
膜,鞘
From:
Webster's Revised Unabridged Dictionary (1913)
The·ca
n.
;
pl
.
Thecae
1.
A
sheath
;
a
case
;
as
,
the
theca
,
or
cell
,
of
an
anther
;
the
theca
,
or
spore
case
,
of
a
fungus
;
the
theca
of
the
spinal
cord
.
2.
Zool.
(a)
The
chitinous
cup
which
protects
the
hydranths
of
certain
hydroids
.
(b)
The
more
or
less
cuplike
calicle
of
a
coral
.
(c)
The
wall
forming
a
calicle
of
a
coral
.
◄
►
From:
WordNet (r) 2.0
theca
n
1:
a
case
or
sheath
especially
a
pollen
sac
or
moss
capsule
[
syn
:
sac
]
2:
outer
sheath
of
the
pupa
of
certain
insects
[
also
:
thecae
(
pl
)]
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