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polar US English

Of or relating to the North or South Pole

polar US Thesaurus

polar regions

polar cap US English

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

polar axis US English

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

polar bear US English

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

polar body US English

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

polar curve US English

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

polar orbit US English

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

polar star US English

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

polar diagram US English

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

polar distance US English

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

polar wandering US English

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

polar coordinates US English

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

bipolar US English

Having or relating to two poles or extremities

unipolar US English

Having or relating to a single pole or kind of polarity

multipolar US English

Having many poles or extremities

spherical coordinates US English

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

spherical polar coordinates in spherical coordinates US English

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


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