Kuiper Belt

noun

Kui·​per Belt ˈkī-pər- How to pronounce Kuiper Belt (audio)
: a band of small celestial bodies beyond the orbit of Neptune from which many short-period comets are believed to originate compare oort cloud

Examples of Kuiper Belt in a Sentence

Recent Examples on the Web
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The Kuiper Belt, a region of the solar system past Neptune’s orbit, is likely home to hundreds of thousands — if not millions — of icy objects that vary in shape and size. Jack Knudson, Discover Magazine, 23 May 2025 Astronomers think there may be a ninth planet 20 times further than the orbit of Neptune in the Kuiper Belt, a region of the solar system that's home to Pluto, other dwarf planets, and comets. Jamie Carter, Forbes.com, 21 May 2025 Like the Kuiper Belt in our solar system, this extraterrestrial debris disk is likely filled with comets, dwarf planets and a lot of water-ice particles chipped off larger bodies as the result of collisions. Keith Cooper, Space.com, 19 May 2025 For instance, Neptune migrated outward, switching places with Uranus, and pushed a lot of the small, icy bodies into the Kuiper Belt, a place in the outer solar system that’s home to dwarf planets Pluto, Eris and Makemake and millions of comets. Lucas Brefka, The Conversation, 19 May 2025 See All Example Sentences for Kuiper Belt

Word History

Etymology

Gerald A. Kuiper †1973 U.S. (Dutch-born) astronomer

First Known Use

1988, in the meaning defined above

Time Traveler
The first known use of Kuiper Belt was in 1988

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Cite this Entry

“Kuiper Belt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Kuiper%20Belt. Accessed 1 Jun. 2025.

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