dwarf planet

noun

: a celestial body that orbits the sun and has a spherical shape but is not large enough to disturb other objects from its orbit

Examples of dwarf planet in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
It was renamed a dwarf planet in 2006 by the International Astronomical Union because of its size and that other planets may cross its orbit. Sara Novak, Discover Magazine, 23 June 2025 Topline Astronomers have found a distant celestial body — potentially a dwarf planet — orbiting the sun from more than twice as far as Pluto. Jamie Carter, Forbes.com, 15 June 2025 The researchers suggest that the discovery of another dwarf planet like Pluto could have significant implications for our understanding of the outer solar system. Alyce Collins, MSNBC Newsweek, 26 May 2025 The researchers found the dwarf planet candidate by meticulously sifting through a huge data set from a telescope in Chile that was scanning the universe for evidence of dark energy. Denise Chow, NBC news, 4 June 2025 See All Example Sentences for dwarf planet

Word History

First Known Use

1993, in the meaning defined above

Time Traveler
The first known use of dwarf planet was in 1993

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Cite this Entry

“Dwarf planet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dwarf%20planet. Accessed 3 Jul. 2025.

Kids Definition

dwarf planet

noun
: a celestial object similar to a planet but too small to clear other objects from its orbit
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