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Zona   Listen
noun
Zona  n.  (pl. zonae)  A zone or band; a layer.
Zona pellucida. (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.
(b)
The zona radiata.
Zona radiata (Biol.), a radiately striated membrane situated next the yolk of an ovum, or separated from it by a very delicate membrane only.





Collaborative International Dictionary of English 0.48


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Words linked to "Zona" :   structure, anatomy, zona pellucida, zonule, complex body part, zonula, anatomical structure, general anatomy, bodily structure, body structure


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