ALL meanings of antarctic circle
ant·arc·tic cir·cle
A a - noun antarctic circle 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 3
- noun antarctic circle an imaginary circle parallel to the equator, c. 66°34′ south of it 3
- noun antarctic circle an imaginary line drawn parallel to the equator, at 23° 28prime; N of the South Pole: between the South Frigid Zone and the South Temperate Zone. 1