Definition of Polyzona. Meaning of Polyzona. Synonyms of Polyzona

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Definition of Polyzona

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Polyzonal
Polyzonal Pol`y*zon"al, a. [Poly- + zonal.] Consisting of many zones or rings. Polyzonal lens (Opt.), a lens made up of pieces arranged zones or rings, -- used in the lanterns of lighthouses.
Polyzonal lens
Lens Lens (l[e^]nz), n.; pl. Lenses (-[e^]z). [L. lens a lentil. So named from the resemblance in shape of a double convex lens to the seed of a lentil. Cf. Lentil.] (Opt.) A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure. Lenses Note: Of spherical lenses, there are six varieties, as shown in section in the figures herewith given: viz., a plano-concave; b double-concave; c plano-convex; d double-convex; e converging concavo-convex, or converging meniscus; f diverging concavo-convex, or diverging meniscus. Crossed lens (Opt.), a double-convex lens with one radius equal to six times the other. Crystalline lens. (Anat.) See Eye. Fresnel lens (Opt.), a compound lens formed by placing around a central convex lens rings of glass so curved as to have the same focus; used, especially in lighthouses, for concentrating light in a particular direction; -- so called from the inventor. Multiplying lens or glass (Opt.), a lens one side of which is plane and the other convex, but made up of a number of plane faces inclined to one another, each of which presents a separate image of the object viewed through it, so that the object is, as it were, multiplied. Polyzonal lens. See Polyzonal.
Polyzonal lens
Polyzonal Pol`y*zon"al, a. [Poly- + zonal.] Consisting of many zones or rings. Polyzonal lens (Opt.), a lens made up of pieces arranged zones or rings, -- used in the lanterns of lighthouses.

Meaning of Polyzona from wikipedia

- Acanthurus polyzona, commonly known as the black-barred surgeonfish or zebra tang, is a tropical fish found in coral reefs in the western Indian Ocean...
- The zebra garden eel (Heteroconger polyzona), also known as the banded garden eel, is a species of eel in the conger/garden eels family Congridae. It was...
- Lampropeltis polyzona, commonly known as the Atlantic Central American milksnake, is a species of nonvenomous snake in the family Colubridae. It is found...
- Stenogobius polyzona, the Chinestripe goby, is a species of goby native to streams and rivers on Madagascar and Réunion. Males of this species can reach...
- The barred moray (Echidna polyzona), also known as the banded moray, the dark-banded eel, the girdled moray, the girdled reef eel, the many banded moray...
- Trachydora polyzona is a moth in the family Cosmopterigidae. It is found in Australia, where it has been recorded from Queensland. Beccaloni, G.; Scoble...
- vellereus (Berk.) Pat. (1921) Coriolus velutinus P.Karst. (1906) Daedalea polyzona sensu auct. (2005) Fomes gourliei (Berk.) Cooke, (1885) Hansenia hirsuta...
- oligozona (Bocourt, 1886) Atlantic Central American milk snake, L. t. polyzona (Cope, 1861) Sinaloan milk snake, L. t. sinaloae (K. Williams, 1978) Smith's...
- Cisthene polyzona is a species of moth in the family Erebidae. It was described by Herbert Druce in 1885. It is found in Mexico, Dominica and Rio de Janeiro...
- Oscaecilia polyzona is a species of amphibian in the family Caeciliidae. It is found in Colombia and possibly Panama. Its natural habitats are subtropical...