| slovo | definícia |
zona pellucida
(encz) | zona pellucida, n: |
Zona pellucida
(gcide) | Zona \Zo"na\, n.; pl. Zonae. [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 striae,
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] |
zona pellucida
(wn) | zona pellucida
n 1: 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 |
| | podobné slovo | definícia |
zona pellucida
(encz) | zona pellucida, n: |
zona pellucida
(wn) | zona pellucida
n 1: 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 |
|