Polaris(redirected from Alpha Ursae Minoris)
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Related to Alpha Ursae Minoris: Ursa Minor
A star located at the end of the handle of the Little Dipper, in the constellation Ursa Minor, approximately 408 light years from Earth, and almost at the north celestial pole. Also called North Star, polar star, polestar.
[New Latin (Stēlla) Polāris, polar (star), from Latin polus, pole; see pole1.]
1. (Celestial Objects) Also called: the Pole Star or the North Star the brightest star in the constellation Ursa Minor, situated slightly less than 1° from the north celestial pole. It is a Cepheid variable, with a period of four days. Visual magnitude: 2.08–2.17; spectral type: F8Ib
2. (Firearms, Gunnery, Ordnance & Artillery)
a. a type of US two-stage intermediate-range ballistic missile, usually fired by a submerged submarine
b. (as modifier): a Polaris submarine.
[shortened from Medieval Latin stella polāris polar star]
Po•lar•is(poʊˈlɛər ɪs, -ˈlær-, pə-)
the polestar or North Star, a star of the second magnitude situated close to the north pole of the heavens, in the constellation Ursa Minor: the outermost star in the handle of the Little Dipper.
[1955–60; short for Medieval Latin stella polāris polar star]
A bright star at the end of the handle of the Little Dipper and almost at the north celestial pole. Also called North Star.
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|Noun||1.||Polaris - the brightest star in Ursa Minor; at the end of the handle of the Little Dipper; the northern axis of the earth points toward it|
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