Polaris Hear it!

Polaris definition

Po·la·ris (pō lar′is)

noun

a binary Cepheid variable, the brightest star in the constellation Ursa Minor; North Star; Pole Star: magnitude, 1.95 to 2.05: used for navigation, since it is the closest star to the north celestial pole and remains nearly stationary throughout the night

Etymology: ModL < ML (stella) polaris, polar (star): see pole

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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