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polar

/ˈpəʊ̯lə(ɹ)/
Dictionary

noun

  • The line joining the points of contact of tangents drawn to meet a curve from a point called the pole of the line.

adjective

  • Of or having a pole or polarity.
  • Of, relating to, measured from, or referred to a geographic pole (the North Pole or South Pole); within the Arctic or Antarctic circles.
  • (space sciences) Of an orbit that passes over, or near, one of these poles.
  • Having a dipole; ionic.
  • Of a coordinate system, specifying the location of a point in a plane by using a radius and an angle.
  • (of a question) Having but two possible answers, yes and no.

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