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…Of or relating to the North or South Pole…

…polar regions…

…Not polar; (Chemistry and Physics) having no electric dipole moment; composed of molecules that have no electric dipole moment.…

…Cold air originating in high latitudes.…

…A region of ice or other frozen matter surrounding a pole of a planet…

…A curve of degree n related to a given curve C of degree n + 1 and a point P by containing every point of C whose tangent passes through P.…

…Of or relating to a north pole, especially the earth's North Pole.…

…The axis of an equatorially mounted telescope that is at right angles to the declination axis and parallel to the earth’s axis of rotation, about which the telescope is turned to follow the apparent movement of celestial objects resulting from the earth’s rotation…

…A large white arctic bear that lives mainly on the pack ice. It is a powerful swimmer and feeds chiefly on seals…

…Each of the small cells that bud off from an oocyte at the two meiotic divisions and do not develop into ova…

…A curve drawn on polar coordinates around a fixed point, as in a polar diagram…

…A sundial whose gnomon lies in a plane containing the earth's axis.…

…A front between polar and equatorial air masses.…

…The Arctic hare, Lepus arcticus, which is found in the Arctic areas of North America and has a coat that turns white in winter.…

…A line passing through a pole or related to a (geographic or magnetic) pole; especially a line joining north and south magnetic poles.…

…(In the United Kingdom and Commonwealth countries) a decoration awarded for distinguished service (now of at least ten years) to those exploring and working in polar regions, instituted by Edward VII in 1904 to acknowledge the return of Scott's first expedition to the Antarctic.…

…A satellite orbit that passes over polar regions, especially one whose plane contains the polar axis…

…The compass plant, Silphium laciniatum (family Asteraceae (Compositae)), a tall, deep-rooted North American plant bearing large flowers similar to sunflowers and leaves that face north and south.…

…A star at or close to a celestial pole, especially Polaris…

…Anaemia developed by polar explorers as a result of the restricted diet and other conditions experienced in polar regions.…

…Either of the Arctic and Antarctic circles.…

…A diagram in which a point of origin is surrounded by a curve whose radius at any given point is proportional to the magnitude of some property measured in the direction of that point. Polar diagrams are often used to depict the directional sensitivity of aerials and microphones…

…(Originally) a thick woollen fabric (rare); (now, a trademark for) a synthetic fabric with a thick, soft pile, used especially to make warm outer clothing and blankets; a jacket made of this.…

…The aurora borealis; the aurora australis.…

…(In angiosperm reproduction) either of the two haploid nuclei which move from the poles of the embryo sac to the centre and fuse with the male gamete to form the triploid primary endosperm nucleus.…

…A surface related to a given surface and a given point in a way analogous to the way a polar is related to a curve.…

…A vector which changes sign when the signs of all its components are changed.…

…= polar wandering.…

…The diameter of a planet measured from pole to pole.…

…The angular distance of a point on a sphere from the nearest pole…

…An equation of a curve or surface expressed in polar coordinates.…

…That moves in a polar orbit.…

…The slow and erratic, real or apparent, movement of the earth’s rotational or magnetic poles relative to the continents throughout geological time, due largely to continental drift…

…A pair of coordinates locating the position of a point in a plane, the first being the length of the straight line (r) connecting the point to the origin, and the second the angle (θ) made by this line with a fixed line…

…The extent to which the polar diameter of a planet is shorter than the mean equatorial diameter.…

…A projection of the earth's surface or of the celestial sphere on to a plane in which the centre of projection is one of the poles.…

…A curve such that the polar of each point with respect to a given conic is tangential to another curve; (also) a polygon such that the polar of each point is a side of another given polygon.…

…Having or relating to two poles or extremities…

…Having or relating to a single pole or kind of polarity…

…Having many poles or extremities…

…Three coordinates that define the location of a point in three-dimensional space. They are the length of its radius vector r, the angle θ between the vertical plane containing this vector and the x-axis, and the angle φ between this vector and the horizontal x-y plane…

…Three coordinates that define the location of a point in three-dimensional space. They are the length of its radius vector r, the angle θ between the vertical plane containing this vector and the x-axis, and the angle φ between this vector and the horizontal x-y plane…