polar
- IPA[ˈpəʊlə]
英式
- relating to the North or South Pole；(of an animal or plant) living in the north or south polar region
- the straight line joining the two points at which tangents from a fixed point touch a conic section.；a variable binary star which emits strongly polarized light, one component being a strongly magnetic white dwarf.
noun: polar, plural noun: polars
- 釋義
- 相關詞
形容詞
- 1. relating to the North or South Pole the polar regions 同義詞
- ▪ (of an animal or plant) living in the north or south polar region most polar birds breed seasonally
- ▪ relating to the poles of a celestial body the polar radius of Jupiter is 66,550 km
- ▪ relating to a celestial pole.
- ▪ relating to the poles of a sphere.
- ▪ relating to the poles of a cell, organ, or part.
- 2. having electrical or magnetic polarity.
- ▪ (of a liquid, especially a solvent) consisting of molecules with a dipole moment.
- ▪ (of a solid) ionic.
- 3. directly opposite in character or tendency depression and its polar opposite, mania 同義詞
名詞
- 1. the straight line joining the two points at which tangents from a fixed point touch a conic section.
- 2. a variable binary star which emits strongly polarized light, one component being a strongly magnetic white dwarf.
- a pair of coordinates locating the position of a point in a plane, the first being the length ...
Oxford American Dictionary
- a pair of coordinates locating the position of a point in a plane, the first being the length ...
Oxford Dictionary
- a large white arctic bear which lives mainly on the pack ice. It is a powerful swimmer and ...
Oxford Dictionary
- the slow and erratic, real or apparent, movement of the earth's rotational or magnetic ...
Oxford American Dictionary
- a satellite orbit that passes over polar regions, especially one whose plane contains the polar ... an amateur radio satellite in a polar orbit the agency maintains four satellites, two in polar orbit
Oxford American Dictionary
- a very large, long-lived, rotating low-pressure system located near the north or south pole, ... earlier in the year, a weather phenomenon known as a polar vortex chilled North America to record low temperatures
Oxford Dictionary
- a large white arctic bear which lives mainly on the pack ice. It is a powerful swimmer and ...
Oxford American Dictionary
- the angular distance of a point on a sphere from the nearest pole.
Oxford American Dictionary
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- IPA[ˈpōlər]
美式
- relating to the North or South Pole: the polar regions
- the straight line joining the two points at which tangents from a fixed point touch a conic section.
Oxford American Dictionary
