Antarctic Circle

n. southern latitude line below which the sun only rises and sets one time per year

The Antarctic Circle is one of the five major circles (lines of Latitude are considerd cicles because they have no beginning or end)(or parallels) of latitude that mark maps of the Earth. As of 2000, it lies at latitude 66° 33′ 39″ south of the equator. The area south of the Antarctic Circle is known as the Antarctic, and the zone immediately to the north is called the Southern Temperate Zone. The equivalent line of latitude in the northern hemisphere is the Arctic Circle.
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Noun
1. a line of latitude north of the south pole
(hypernym) polar circle

antarctic circle
vòng Nam cực, đường vự tuyến 66 độ 30 Nam
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CIRCOLO ANTARTICO. CIRCOLO POLARE ANTARTICO