polar

polar
adjective

of or relating to the North or South Pole
地极的，极地的
the polar regions.
极地地区。
■(of an animal or plant) living in the north or south polar region
（动物，植物）生活于极地地区的
■(Astronomy)of or relating to the poles of a celestial body
(天文)（天体）极的，极性的
■(Astronomy)of or relating to a celestial pole
(天文)（天体）极地的
■(Geometry)of or relating to the poles of a sphere
(几何)（球体）极的，极性的。见 pole
■(Biology)of or relating to the poles of a cell, organ, or part
(生)（细胞，器官，身体部分）极的，极性的
(Physics & Chemistry)having electrical or magnetic polarity
(物理，化)有电极的；有磁极的
■(of a liquid, especially a solvent) consisting of molecules with a dipole moment
（液体，尤指溶剂）由偶极矩分子组成的
■(of a solid) ionic
（固体）离子的
directly opposite in character or tendency
（特点，倾向）截然相反的
depression and its polar opposite, mania.
沮丧以及其截然相反的对立面狂热。

noun

(Geometry)the straight line joining the two points at which tangents from a fixed point touch a conic section
(几何)极线
(Astronomy)a variable binary star which emits strongly polarized light, one component being a strongly magnetic white dwarf
(天文)极光双子星

语源

mid 16th cent.: from medieval Latin polaris 'heavenly', from Latin polus 'end of an axis' (see pole)

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