Etymology: From comete (French: comète), from cometa, from (kometes) "longhaired", referring to the tail of a comet, from (kome) "hair".
- (astronomy) 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.
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Full Definition of comet