zone, zona

(noun) (anatomy) any encircling or beltlike structure

Source: WordNet® 3.1

Etymology 1


zona (plural zonas or zonae or zonæ)

(science) A zone or band; a layer.

Etymology 2


zona (plural zonas)

A species of silverside fish (Atheriniformes), Bedotia geayi, from Madagascar, also called red-tailed silverside.


• -zoan, Azon, onza

Proper noun

Zona (plural Zonas)

A surname.

A female given name.

An unincorporated community in Roane County, West Virginia.


• According to the 2010 United States Census, Zona is the 19062nd most common surname in the United States, belonging to 1428 individuals. Zona is most common among White (95.73%) individuals.


• -zoan, Azon, onza

Source: Wiktionary

Zo"na, n.; pl. Zonæ. Etym: [L., a girdle. See Zone.]

Definition: A zone or band; a layer. Zona pellucida. Etym: [NL.] (Biol.) (a) 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 Etym: [NL.] (Biol.), a radiately striated membrane situated next the yolk of an ovum, or separated from it by a very delicate membrane only.

Source: Webster’s Unabridged Dictionary 1913 Edition


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