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
"The chemical compositions of the melt splashes suggest that Ryugu's hydrous silicates mixed with cometary dust."
From Science Daily ● Jan. 23, 2024
The outburst may result from a rare case of icy volcanism on a comet—uncorked by solar heating of volatile gases trapped under cometary crusts.
From Scientific American ● Jul. 26, 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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