asteroid belt

noun

: the region of interplanetary space between the orbits of Mars and Jupiter in which most asteroids are found

Examples of asteroid belt in a Sentence

Recent Examples on the Web
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They are primarily found orbiting the sun, between the paths of Mars and Jupiter, in the main asteroid belt. Thomas G. Moukawsher, Newsweek, 30 Jan. 2025 The largest object in the asteroid belt, the dwarf planet Ceres, is an icy body that measures 592 miles across. Jeffrey Kluger, TIME, 29 Jan. 2025 There are billions upon billions of asteroids in the roughly 92 million-mile-thick asteroid belt, according to EarthSky.org. Janet Loehrke, USA TODAY, 24 Nov. 2024 MBAs are asteroids that orbit the sun within the asteroid belt, a region located between the orbits of Mars and Jupiter, about 2.1 to 3.3 astronomical units (roughly 195 to 307 million miles) from our star. George Monastiriakos, Newsweek, 30 Dec. 2024 See all Example Sentences for asteroid belt 

Word History

First Known Use

1867, in the meaning defined above

Time Traveler
The first known use of asteroid belt was in 1867

Dictionary Entries Near asteroid belt

Cite this Entry

“Asteroid belt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/asteroid%20belt. Accessed 8 Feb. 2025.

Kids Definition

asteroid belt

noun
: the region of interplanetary space between the orbits of Mars and Jupiter in which most asteroids are found

More from Merriam-Webster on asteroid belt

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