南なん極きょく線せんなんきょくせんMeanings1nounAntarctic CircleGeographical term for the southern polar circle at approximately 66°33′49.8″ south latitude.南なん極きょく線せんは南なん緯い約やく66.5度どに位い置ちする。The Antarctic Circle is located at approximately 66.5 degrees south latitude.