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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
Bright deposits on the dwarf planet Ceres, the largest body in the asteroid belt, contain sodium carbonate.
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Ars Technica, 30 Jan. 2025
The largest object in the asteroid belt, the dwarf planet Ceres, is an icy body that measures 592 miles across.
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Jeffrey Kluger, TIME, 29 Jan. 2025
The Nature study points out that the dwarf planet Ceres and Saturn’s icy moon Enceladus have also shown evidence of sodium carbonate brines in recent years.
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Ella Jeffries, Smithsonian Magazine, 29 Jan. 2025
As such, scientists have also previously found evidence for ammonia in salt form on the dwarf planet Ceres, which sits in the asteroid belt between Mars and Jupiter, and within the plumes of Saturn's famously icy moon Enceladus.
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Monisha Ravisetti, Space.com, 29 Jan. 2025
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Word History
First Known Use
1993, in the meaning defined above
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Cite this Entry
“Dwarf planet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dwarf%20planet. Accessed 8 Feb. 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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