Comet Definition

kŏmĭt
comets
noun
A small, frozen mass of water, gas, rocks, and dust revolving around the sun in a parabolic or elliptical orbit: as it nears the sun it vaporizes, forming a coma and, usually, a long tail of ions that points away from the sun.
Webster's New World
The definition of a comet is a celestial body that moves around the sun, and as it goes near the sun it forms a vapor trail of dust and gas that streams after it.
An example of comet is Haley's.
YourDictionary
A celestial phenomenon with the appearance given by the orbiting celestial body.
Wiktionary
Synonyms:
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Other Word Forms of Comet

Noun

Singular:
comet
Plural:
comets

Origin of Comet

  • Middle English comete from Old English comēta from Late Latin from Latin comētēs from Greek komētēs long-haired (star), comet from komē hair

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old French comete (French: comète), from Latin cometes, from Ancient Greek κομήτης (komētēs, “longhaired”), referring to the tail of a comet, from κόμη (komē, “hair”).

    From Wiktionary

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