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Hasil cari dari kata atau frase: zona pellucida (0.01296 detik)
Found 2 items, similar to zona pellucida.
English → English (WordNet)
Definition: zona pellucida
zona pellucida
n : thick membrane around the mammalian ovum; can be penetrated
by one sperm in the fertilization process; usually
remains around the fertilized egg until it is implanted
in the wall of the uterus
English → English (gcide)
Definition: Zona pellucida
Zona
\Zo"na\, n.; pl.
Zon[ae]. [L., a girdle. See
Zone.]
A zone or band; a layer.
[1913 Webster]
Zona pellucida. [NL.] (Biol.)
(a) The outer transparent layer, or envelope, of the ovum. It
is a more or less elastic membrane with radiating
stri[ae], and corresponds to the cell wall of an ordinary
cell. See
Ovum, and Illust. of
Microscope.
(b) The zona radiata.
Zona radiata [NL.] (Biol.), a radiately striated membrane
situated next the yolk of an ovum, or separated from it by
a very delicate membrane only.
[1913 Webster]
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