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 location change means some riverside New Jersey residents will be treated to firework designs like cross rings, strobing comets, and waterfalls (but no such luck for Brooklyn this year). Juliet Izon, Condé Nast Traveler, 26 June 2024 Monthly skywatcher's guide to 2024:Eclipses, full moons, comets and meteor showers When is the full moon? Doyle Rice, USA TODAY, 21 May 2024 Meteor showers happen when the Earth passes through debris trails left by comets. Alex Groth, Journal Sentinel, 16 Apr. 2024 Meanwhile, The Comet, an apocalyptic tale written in 1920, concerns a Black man and a White woman in New York City who emerge as the only survivors after a comet strike has wiped out humankind. Jordan Riefe, The Hollywood Reporter, 13 June 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 15 Jul. 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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