Polaris Definition

pə-lărĭs
noun
A binary Cepheid variable, the brightest star in the constellation Ursa Minor; North Star; Pole Star: magnitude, 1.97: used for navigation, since it is the closest star to the north celestial pole and remains nearly stationary throughout the night.
Webster's New World
Synonyms:
pronoun

(astronomy) The pole star, a trinary star in the constellation Ursa Minor that currently lies close to the north celestial pole; Alpha (α) Ursae Minoris.

Wiktionary

A type of U.S. ballistic missile, capable of carrying a nuclear warhead and designed to be launched from a submarine.

Wiktionary

Origin of Polaris

  • New Latin (Stēlla) Polāris polar (star) from Latin polus pole pole1

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin Stella polaris, "pole star"

    From Wiktionary

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