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)