the relation between a pair of antonyms that denote relatively higher and lower degrees of a quality with respect to an explicit or implicit norm rather than absolute values, as the relation between tall and short or light and dark, but not between true and false.
noun 1. a spacecraft orbit that passes over, or close to, the geographic poles of the earth or some other celestial body. noun 1. the orbit of a satellite that passes over the poles of a planet
noun, Meteorology. 1. a vigorous thrust of cold, polar air across temperate regions.
plural noun 1. the regions within the Arctic and Antarctic circles.
- Polar sequence
noun 1. (astronomy) a series of stars in the vicinity of the N celestial pole whose accurately determined magnitudes serve as the standard for visual and photographic magnitudes of stars