cometary
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a word derived from
comet.
cometnouna celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and gas that may form a tail that streams away from the sun.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“This is due to the fact that fireballs originate from larger particles of cometary material.”
From Los Angeles Times ● Jul. 29, 2025
Now, a team of scientists have performed an intensive investigation of Ryugu samples, discovering evidence that points to cometary organic matter being transported from space to the near-Earth region.
From Science Daily ● Jan. 23, 2024
The formation of a supercontinent is not a fast and furious horror show like a cometary impact or, say, humanity’s rapid-fire gaming of the climate and annihilation of natural habitats.
From Scientific American ● Oct. 17, 2023
In the same paper, Loeb theorized the acceleration could have been a result of cometary outgassing, but said it was unlikely because there was no evidence for a cometary tail around it.
From Salon ● Mar. 26, 2023
There the Sun heats it, the ice is vaporized, and a lovely cometary tail develops.
From "Cosmos" by Carl Sagan
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