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Either of two extreme latitude zones of the earth, the North Frigid Zone, between the North Pole and the Arctic Circle, or the South Frigid Zone, between the South Pole and the Antarctic Circle.
(Physical Geography) archaic the cold region inside the Arctic or Antarctic Circle where the sun's rays are very oblique
either of two regions, one between the Arctic Circle and the North Pole, or one between the Antarctic Circle and the South Pole.
Either of two zones of the Earth of extreme latitude, the North Frigid Zone, extending north of the Arctic Circle, or the South Frigid Zone, extending south of the Antarctic Circle.