polar
UK /ˈpəʊ.lə/ · US /ˈpoʊlɚ/ adjective, noun
Forms polars
- adjective (geography) Of, relating to, measured from, or referred to a geographic pole (the North Pole or South Pole); within the Arctic or Antarctic circles.
- adjective (space sciences) Of an orbit that passes over, or near, one of these poles.
- adjective (chemistry) Having a dipole; ionic.
- adjective (mathematics) Of a coordinate system, specifying the location of a point in a plane by using a radius and an angle.
- adjective (linguistics, of a question) Having but two possible answers, yes and no.
- adjective (conceptual analysis) Of or relating to a pole (extreme) on any spectrum or field, such as an ideologically pure dogmatic position as opposed to any syncretic integration or balancing of competing principles. “polar viewpoints”
- noun (geometry) The line joining the points of contact of tangents drawn to meet a curve from a point called the pole of the line.
Synonyms
diametric diametrical opposite arctic frigid gelid glacial icy pivotal
Antonyms
Etymology
Learned borrowing from Late Latin polāris. By surface analysis, pole + -ar.
Webster’s 1913
- adjective Of or pertaining to one of the poles of the earth, or of a sphere; situated near, or proceeding from, one of the poles; as, polar regions; polar seas; polar winds.
- adjective Of or pertaining to the magnetic pole, or to the point to which the magnetic needle is directed.
- noun The right line drawn through the two points of contact of the two tangents drawn from a given point to a given conic section. The given point is called the pole of the line. If the given point lies within the curve so that the two tangents become imaginary, there is still a real polar line which does not meet the curve, but which possesses other properties of the polar. Thus the focus and directrix are pole and polar. There are also poles and polar curves to curves of higher degree than the second, and poles and polar planes to surfaces of the second degree.
Etymology [Cf. F. polaire. See Pole of the earth.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “polar”, CC BY-SA 4.0. Details