adj.
- relating to a pole or poles, in particular the North or South Pole or their adjacent area.
- Physics & Chemistry having an electrical or magnetic field.
- directly opposite in character or tendency:
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polar opposites.
n.
Geometry the straight line joining the two points at which tangents from a fixed point touch a conic section.
Etymology
C16: from med. L. polaris ‘heavenly’, from L. polus (see pole2).
