polar circle Definition

antarctic circle, frigid zone, arctic circle, arctic, antarctica, kara sea, severnaya zemlya, antarctic, north pole, tropic of cancer, tropic of capricorn, equator, antarctic peninsula, equinoctial circle, polar, arctic ocean, amphigean, torrid zone, climatic zone, magnetic pole, ice foot, antiscian, aurora australis, almucantar, periscian, ellesmere island, ross island, northern hemisphere, greenland, line of latitude, white sea, north pacific, ross sea, south temperate zone, continental slope, angular distance, ice mass, magnetic north, sastruga, midnight sun, north temperate zone, zastruga, laptev sea, chukchi peninsula, international date line, hummocking, hydrospace, northwest passage, axis of rotation, bering strait, drift ice, latitude, subequatorial, chippewyan, celestial equator, wrangel island, barents sea, artic, ionopause, prime meridian, subarctic, tropical zone, superglacial, circumboreal, isothermobath, psychrophyte, isobathytherm, equatorial, glacier, bering sea, coriolis force, sidereal day, celestial pole, circumpolar, isocheim, sea of okhotsk, hemisphere, glacialist, isothermobathic, epeirogenesis, ultratropical, franz josef land, siberia, norwegian sea, inferior planet, solar year, stratopause, sidereal time, armil, circumjovial, icecap, grivation, northernness, isocryme, spitzbergen, katabatic wind, right ascension, microcontinent, selenodesy, colatitude,