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Zona

   Also found in: Medical, Legal, Financial, Acronyms, Encyclopedia, Wikipedia 0.01 sec.
Zo´na
n.1.A zone or band; a layer.
Zona pellucida
a - (Biol.) The outer transparent layer, or envelope, of the ovum. It is a more or less elastic membrane with radiating striæ, and corresponds to the cell wall of an ordinary cell. See Ovum, and Illust. of Microscope.
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.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.zona - (anatomy) any encircling or beltlike structure
zone
anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"
zona pellucida - 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
zonula, zonule - small beltlike zone
anatomy, general anatomy - the branch of morphology that deals with the structure of animals
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The engagement ring cost just pounds 2 but it took five years of saving up before Bert Batty could tie the knot with Zona in 1933.
For better or worse over 74yrs by The Mirror (London, England)
The Norwegians have made a prototype of the new cream, called Zona, in the hope of selling it worldwide.
As soft as your fish by Daily Record (Glasgow, Scotland)
Byline: Ben Zona I HAVE no doubt that Benitez has done the best job possible given the resources at his disposal.
Your Shout : Reader's letter by Liverpool Echo (Liverpool, England)
 
 
 
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