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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Coming within just a few thousand miles of the red planet's surface, the Psyche vehicle will benefit from a gravity boost that will send it whizzing toward the main asteroid belt between Mars and Jupiter. Eric Lagatta, USA Today, 15 May 2026 The gravity assist allows the spacecraft to conserve fuel while continuing its years-long journey into the asteroid belt. Jamie Carter, Forbes.com, 15 May 2026 This will enable the spacecraft to adjust its trajectory towards the 173-mile-wide (280 km) metal-rich asteroid 16 Psyche, (or just Psyche) which sits in the main asteroid belt between Mars and Jupiter. Robert Lea, Space.com, 12 May 2026 Most asteroids are found in the asteroid belt between Mars and Jupiter, but some travel on paths that bring them closer to Earth — these are called near-Earth asteroids. Marley Malenfant, Austin American Statesman, 19 Feb. 2026 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 19 May. 2026.

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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