 | WordWeight : Weighing the Words |
| WordWeight : Weighing the Words |
Pronunciation : Zo"na
Part of Speech : n.;
Etymology : [L., a girdle. See Zone.]
Definition : Defn: 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 stri?, 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.
pl. Zon
Source : Webster's Unabridged Dictionary, 1913
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Zona