Online Google Dictionary

circumpolar 中文解釋 wordnet sense Collocation Usage Collins Definition
Adjective
/ˌsərkəmˈpōlər/,
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Situated around or inhabiting one of the earth's poles,
  1. Situated around or inhabiting one of the earth's poles
    • - the eight circumpolar countries met in 1991
  2. (of a star or motion) Above the horizon at all times in a given latitude
    • - the Big Dipper is circumpolar at Mediterranean latitudes
  1. (of a celestial body) continually visible above the horizon during the entire 360 degrees of daily travel; "a circumpolar star"
  2. located or found throughout a polar region
  3. An object that does not set from its observer's latitude.
  4. Located around a polar region (e.g. a water current travelling around the south pole is called a circumpolar current).
  5. Surrounding or found in the vicinity of a terrestrial pole - either north or south.
  6. denotes an object near a celestial pole that never dips below the horizon as Earth rotates.
  7. revolving around the poles without setting, as circumpolar stars
  8. A star that appears to rotate about one of the celestial poles very close to the pole
  9. A circle of sky which is permanently above the observer's horizon, with stars that never set. (Literally, "around the pole".) This is a function of the observer's latitude; e.g. in Edmonton, with a latitude of 54° N. ...
  10. Circumpolar stars are permanently above the horizon from a given observing point on Earth; that is to say, they never set. At Earth’s Geographical North Pole (90° north latitude), all stars in the sky are circumpolar. On Earth’s equator, no stars are circumpolar.
  11. Ranging around either pole.
  12. Refers to a celestial object that never sets. It circles the celestial pole, is always above the horizon, and can be seen in the sky any night of the year. Whether or not a particular object is circumpolar depends on position of the observer on the Earth's surface. ...