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circumpolar

[sur-kuh m-poh-ler] /ˌsɜr kəmˈpoʊ lər/
adjective
1.
around or near a pole, as of the earth.
Origin
1680-1690
1680-90; circum- + polar
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for circumpolar

circumpolar

/ˌsɜːkəmˈpəʊlə/
adjective
1.
(of a star or constellation) visible above the horizon at all times at a specified locality on the earth's surface
2.
surrounding or located at or near either of the earth's poles
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for circumpolar
adj.

1680s in astronomy; 1690s in geography, from circum- + polar.

Online Etymology Dictionary, © 2010 Douglas Harper
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circumpolar in Science
circumpolar
  (sûr'kəm-pō'lər)   
  1. Located or found in one of Earth's polar regions.

  2. Denoting a star that from a given observer's latitude does not go below the horizon during its diurnal motion. The closer an observer is to one of the poles, the greater the portion of the sky that contains circumpolar stars. At the pole itself, all stars are circumpolar.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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