Definition of Polaris in English:


proper noun

  • 1Astronomy
    A fairly bright star located within one degree of the north celestial pole, in the constellation Ursa Minor. It is a triple star, the bright component of which is a cepheid variable.

    Also called North Star, polestar
  • 2A type of submarine-launched ballistic missile designed to carry nuclear warheads, formerly in service with the US and British navies.


Mid 19th century: from medieval Latin polaris heavenly from Latin polus end of an axis.