1
- of or relating to the North or South Pole地极的, 极地的：
the polar regions.
极地地区。
1.1
- (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。
1.2
- Astronomy of or relating to the poles of a celestial body【天文】（天体）极的, 极性的。
1.3
- Astronomy of or relating to a celestial pole【天文】（天体）极地的。
1.4
- Geometry of or relating to the poles of a sphere【几何】（球体）极的, 极性的。见POLE2.
1.5
- 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。
2
- Physics & Chemistry having electrical or magnetic polarity【物理, 化】有电极的; 有磁极的。
2.1
- (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。
2.2
- (of a solid) ionic（固体）离子的。
3
- directly opposite in character or tendency（性格、特点或倾向方面）截然相反的：
depression and its polar opposite, mania.
沮丧及其截然相反的对立面-狂热。
1
- Geometry the straight line joining the two points at which tangents from a fixed point touch a conic section【几何】极线。
2
- 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。
词源
mid 16th cent.: from medieval Latin polaris 'heavenly', from Latin polus 'end of an axis' （see POLE2）.