comet

noun

com·​et ˈkä-mət How to pronounce comet (audio)
: a celestial body that appears as a fuzzy head usually surrounding a bright nucleus, that has a usually highly eccentric orbit, that consists primarily of ice and dust, and that often develops one or more long tails when near the sun
cometary adjective
cometic adjective

Examples of comet in a Sentence

Recent Examples on the Web The Perseid meteor shower occurs around the same time each year, when Earth passes through the debris of a comet called Swift-Tuttle. Chantelle Lee, TIME, 6 Aug. 2024 The Rogue Prince then sees the red comet that pierced the skies above Westeros and Essos during the events of the Game of Thrones season 2 premiere. Nick Romano, EW.com, 5 Aug. 2024 Where the Perseids come from As with other meteor showers, the Perseids occur when Earth travels through the trail of rocks and dust left behind by a comet. Sarah Kuta, Smithsonian Magazine, 5 Aug. 2024 The big picture: Meteor showers happen when Earth passes through trails of debris left behind by comets and asteroids, usually at the same time each year. Christine Clarridge, Axios, 5 Aug. 2024 See all Example Sentences for comet 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'comet.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Middle English comete, from Old English cometa, from Latin, from Greek komētēs, literally, long-haired, from koman to wear long hair, from komē hair

First Known Use

before the 12th century, in the meaning defined above

Time Traveler
The first known use of comet was before the 12th century

Dictionary Entries Near comet

Cite this Entry

“Comet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/comet. Accessed 19 Aug. 2024.

Kids Definition

comet

noun
com·​et ˈkäm-ət How to pronounce comet (audio)
: a bright heavenly body that develops a cloudy tail as it moves closer to the sun in its orbit
Etymology

Old English cometa "comet," from Latin cometa (same meaning), from Greek komētēs, literally, "long-haired," derived from komē "hair" — related to coma entry 2

More from Merriam-Webster on comet

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