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comet 音標拼音: [k'ɑmət] n. 慧星 慧星 comet n 1: ( astronomy) a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbitComet \ 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 to the sun in its perihelion, and receding to a very great distance from it at its aphelion. A comet commonly consists of three parts: the nucleus, the envelope, or coma, and the tail; but one or more of these parts is frequently wanting. See Illustration in Appendix. [ 1913 Webster] 27 Moby Thesaurus words for " comet": Aldebaran, Canicula, Dog Star, Hesper, Hesperus, Lucifer, North Star, Phosphor, Phosphorus, Polaris, Sirius, Venus, Vesper, celestial body, daystar, evening star, fixed stars, heavenly body, living sapphires, lodestar, morning star, orb, polar star, polestar, sphere, starry host, stars
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