(physics) the state of being a north pole or south pole; the magnetic equivalent of electric charge

(physics) light in which the electric and magnetic fields each vibrate in a single plane

(linear algebra) Relative to a set S in Rⁿ, the set of points y such that the inner product of x and y is not positive for any point x in S.

Permanent sea ice found in the Arctic and Antarctic

plural of polar bear

A period of darkness that occurs in winter in polar regions north from the Arctic Circle and south from the Antarctic Circle, and during which the sun stays below the horizon.

(planetology) A high-latitude region of a celestial body that is covered by ice.

(mathematics) An equation defining a curve in terms of radius and angle.

(semantics) gradable antonym

plural of polar cone