Wordnet 3.0
ADJECTIVE (2)
1.
(of a celestial body) continually visible above the horizon during the entire 360 degrees of daily travel;
- Example: "a circumpolar star"2.
located or found throughout a polar region;
The Collaborative International Dictionary of English v.0.48:
Circumpolar \Cir`cum*po"lar\, a. [Pref. circum- + polar.]
About the pole; -- applied to stars that revolve around the
pole without setting; as, circumpolar stars.
[1913 Webster]
WordNet (r) 3.0 (2006):
circumpolar
adj 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