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either the Arctic or the Antarctic Circle.
a term for either the Arctic Circle, Antarctic Circle
polar circle
The Arctic Circle or the Antarctic Circle.


Read Also:

  • Polar coordinate system

    polar coordinate system A system of coordinates in which the location of a point is determined by its distance from a fixed point at the center of the coordinate space (called the pole) and by the measurement of the angle formed by a fixed line (the polar axis, corresponding to the x-axis in Cartesian coordinates) […]

  • Polar-distance

    noun, Astronomy. 1. . noun 1. the angular distance of a star, planet, etc, from the celestial pole; the complement of the declination Also called codeclination

  • Polar-equation

    noun, Mathematics. 1. an equation in which the variables are polar coordinates. noun 1. an equation in polar coordinates

  • Polar-front

    noun 1. Meteorology. the variable frontal zone of middle latitudes separating air masses of polar and tropical origin. noun 1. (meteorol) a front dividing cold polar air from warmer temperate or tropical air polar front The region or boundary separating air masses of polar origin from those of tropical or subtropical origin. The position of […]

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