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Zona   /zˈoʊnə/   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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"Zona" Quotes from Famous Books



... disease from head to foot; it being self-evident that he is simultaneously affected with Apoplexy, Arthritis, Ascites, Asphyxia, and Atrophy; with Borborygmus, Bronchitis, and Bulimia; with Cachexia, Carcinoma, and Cretinismus; and so on through the alphabet, to Xerophthahnia and Zona, with all possible and incompatible diseases which are necessary to make up a totally morbid state; and he will certainly die, if he does not take freely of our prepared calomel, to be obtained only of one of ...
— The Autocrat of the Breakfast-Table • Oliver Wendell Holmes, Sr. (The Physician and Poet not the Jurist)


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