Meaning of “comet” in the English Dictionary

british dictionary

"comet" in American English

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cometnoun [ C ]

us /ˈkɑm·ɪt/

earth science a body of rock and ice that travels around the sun and that, as it nears the sun, develops a long tail of small pieces that can be seen

(Definition of “comet” from the Cambridge Academic Content Dictionary © Cambridge University Press)