dwarf planet


: 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 Long believed to be the ninth planet in our solar system, Pluto's planetary status was downgraded to a dwarf planet by the International Astronomical Union in 2006. Brenna Gauchat, The Arizona Republic, 26 Mar. 2024 Since its discovery in Flagstaff, Pluto has become Arizona's favorite dwarf planet. Brenna Gauchat, The Arizona Republic, 26 Mar. 2024 Like the three moons, this dwarf planet is likely insulated by a sufficiently thick crust that slows the leaking of its radioactive furnace into space. WIRED, 24 Dec. 2023 The moon makes a trine to Pluto & a sextile to Neptune The dwarf planet Pluto’s trine to the moon gives us power to be our own authority and can also bring intense emotions. Emily Newhouse, Allure, 22 Nov. 2023 Mike Brown of the California Institute of Technology, who discovered the object Eris in 2003, which led to Pluto’s demotion from a planet to a dwarf planet, has similar concerns. Jonathan O'Callaghan, Scientific American, 3 Oct. 2023 What astronomers discovered was a complex dwarf planet with a surprisingly varied landscape potted with huge cliffs, deep ravines, enormous mountains all battered by a curious kind of weather with evidence of water plus much more. Discover Magazine, 26 Oct. 2023 Which is why the discovery of rings around the dwarf planet Quaoar is such a surprise. The Physics Arxiv Blog, Discover Magazine, 21 Apr. 2023 This year, every planet in our solar system will retrograde, including the dwarf planet Pluto. Carlie Procell, USA Today, 19 Apr. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'dwarf planet.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1993, in the meaning defined above

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

Dictionary Entries Near dwarf planet

Cite this Entry

“Dwarf planet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dwarf%20planet. Accessed 20 May. 2024.

Kids Definition

dwarf planet

: a celestial object similar to a planet but too small to clear other objects from its orbit
Last Updated: - Updated example sentences
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