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Related to Antarctic Circle: International Date Line
The parallel of latitude approximately 66°34′ south, the northern boundary of the South Frigid Zone, marking the approximate limit south of which the sun remains above the horizon all day on the summer solstice.
(Physical Geography) the imaginary circle around the earth, parallel to the equator, at latitude 66° 32′ S; it marks the southernmost point at which the sun appears above the level of the horizon at the winter solstice
an imaginary line drawn parallel to the equator, at 23° 28~ N of the South Pole: between the South Frigid Zone and the South Temperate Zone.
The parallel of latitude approximately 66°33′ south. It forms the boundary between the South Temperate Zone and South Frigid Zone.
A line of latitude approximately 66.5° south of the equator; the southern hemisphere’s equivalent of the Arctic Circle.
|Noun||1.||Antarctic Circle - a line of latitude north of the south pole|