Dictionary  Po•lar•isPronunciation: (pō-lâr'is, -lar'-, pu-), [key] —n. 1. Astron.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. 2. a two-stage U.S. ballistic missile, usually fired from a submerged submarine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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