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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Officials expect Psyche to keep that date, which is critical for using Mars' gravity to slingshot the spacecraft deeper into the Solar System, eventually reaching the asteroid belt about four years from now. ArsTechnica, 21 June 2025 Most orbit the Sun between Mars and Jupiter in the main asteroid belt, though some, called Near-Earth Objects (NEOs), pass much closer to our planet. Mohammed Soliman, MSNBC Newsweek, 28 Apr. 2025 The asteroids are theorized to have most likely originated from debris in the main asteroid belt between the orbits of Mars and Jupiter. Eric Lagatta, USA Today, 7 June 2025 Getty Asteroids—small, rocky masses left over from the formation of the solar system nearly 4.6 billion years ago—are found in the main asteroid belt, orbiting around the sun between the paths of Mars and Jupiter. Soo Kim, MSNBC Newsweek, 5 June 2025 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

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Cite this Entry

“Asteroid belt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/asteroid%20belt. Accessed 4 Jul. 2025.

Kids Definition

asteroid belt

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

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