comet

comet
noun /ˈkɒmət/
a) A celestial body consisting mainly of ice, dust and gas in an (usually very eccentric) orbit around the Sun and having a "tail" of matter blown back from it by the solar wind as it approaches the Sun.
b) A celestial phenomenon with the appearance given by the orbiting celestial body.
See Also: periodic comet

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  • Comet — Com et, n. [L. cometes, cometa, from Gr. ? comet, prop. long haired, fr. ? to wear long hair, fr. ? hair, akin to L. coma: cf. F. com[ e]te.] (Astron.) A member of the solar system which usually moves in an elongated orbit, approaching very near… …   The Collaborative International Dictionary of English

  • comet — c.1200, from O.Fr. comete (12c., Mod.Fr. comète), from L. cometa, from Gk. (aster) kometes, lit. long haired (star), from kome hair of the head (Cf. koman let the hair grow long ), of unknown origin. So called from resemblance of a comet s tail… …   Etymology dictionary

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  • comet — ► NOUN ▪ a celestial object moving around the solar system, consisting of a nucleus of ice and dust and, when near the sun, a diffuse tail. DERIVATIVES cometary adjective. ORIGIN Greek kom t s long haired star …   English terms dictionary

  • comet — [käm′it] n. [ME comete < OE cometa & OFr comete, both < L cometa < Gr komētēs, lit., long haired (star) < komē, lit., hair of the head] a small, frozen mass of dust and gas revolving around the sun in a parabolic or elliptical orbit:… …   English World dictionary

  • Comet — This article is about the astronomical object. For other uses, see Comet (disambiguation). Comet Hale– …   Wikipedia

  • comet — cometary /kom i ter ee/, cometic /keuh met ik/, cometical, adj. cometlike, adj. /kom it/, n. Astron. a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and… …   Universalium

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