frigid zone


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frigid zone:

see Arctic, theArctic, the
northernmost area of the earth, centered on the North Pole. The arctic regions are not coextensive with the area enclosed by the Arctic Circle (lat. 66°30'N) but are usually defined by the irregular and shifting 50°F; (10°C;) July isotherm that closely
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; AntarcticaAntarctica
, the fifth largest continent, c.5,500,000 sq mi (14,245,000 sq km), asymmetrically centered on the South Pole and almost entirely within the Antarctic Circle. Geology and Geography

Antarctica consists of two major regions: W Antarctica (c.
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; zonezone
[Gr.,=girdle], in geography, area with a certain physical and/or cultural unity that distinguishes it from other areas. The division of the earth into five climatic zones probably originated (5th cent. B.C.
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.
References in periodicals archive ?
They isolated 6 genera of actinobacteria in saxicolous lichens from torrid zone and frigid zone, in which 5 were same as our study (exclude Actinomadura).
Pomponius Mela, accepting a spherical Earth, suggested that it be divided into a North Frigid Zone and a South Frigid Zone in the neighborhood of the poles, a Torrid Zone in the neighborhood of the Equator, and a North Temperate Zone and a South Temperate Zone in between.
Legume Family trees are widely distributed around the world, growing from the tropics to the frigid zones.