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Thesaurus: zona

A zone or band; a layer.

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ovumdefinitionlayerdefinitionmembranedefinitioncelldefinitionetymdefinitionradiatadefinitionzonedefinitionbanddefinitionanatomydefinitionbeltlikedefinitionelasticdefinitionencirclingdefinitionenvelopedefinitionlessdefinitionnextdefinitionordinarydefinitionouterdefinitionradiatelydefinitionradiatingdefinitionseedefinitionseparateddefinitionstriateddefinitionstructuredefinitiontransparentdefinitionwalldefinitionyolkdefinitioncorrespondsdefinitiondelicatedefinition

Definitions

  1. n. A zone or band; a layer.
  2. n. (anatomy) any encircling or beltlike structure
  3. 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.
  4. A zone or band; a layer. Zona pellucida. Etym: [NL.] (Biol.)(a) The outer transparent layer, or envelope, of the ovum. It is amore or less elastic membrane with radiating striæ, and correspondsto the cell wall of an ordinary cell. See Ovum, and Illust. ofMicroscope. (b) The zona radiata.-- Zona radiata Etym: [NL.] (Biol.), a radiately striated membranesituated next the yolk of an ovum, or separated from it by a verydelicate membrane only.
  5. n (anatomy) any encircling or beltlike structure