dwarf planet

noun

Definition of 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

Dawn’s shell is still in that last orbit around the dwarf planet Ceres. Mary Beth Griggs, The Verge, "NASA’s Dawn spacecraft is dead," 1 Nov. 2018 Now, the Dawn spacecraft at the dwarf planet Ceres must face the same fate. Eric Berger, Ars Technica, "The Dawn spacecraft exploring the asteroid belt has gone dark," 1 Nov. 2018 The surface itself is only about 500,000 years old, although the dwarf planet itself is about 4.5 billion years old. Ashley Strickland, CNN, "Pluto has 'Earth-like characteristics,' study says," 31 May 2018 And Stern argues that this flyby is even more challenging than the one at Pluto, when New Horizons came within 7,750 miles of the dwarf planet’s surface. Loren Grush, The Verge, "On New Year’s Day, a spacecraft will zoom by the most distant object humanity has ever visited," 27 Dec. 2018 Given the shape of the ridge, Tricarico was able to precisely place the former pole of the dwarf planet. John Timmer, Ars Technica, "Ceres might have tilted over onto its side," 9 Oct. 2018 Which brings us to Ceres, a dwarf planet that is the largest body in the asteroid belt. John Timmer, Ars Technica, "Ice volcanoes have likely been erupting for billions of years on Ceres," 18 Sep. 2018 Scott Sheppard of the Carnegie Institution for Science, one of the astronomers who made the discovery, says the Goblin is on the small end for a dwarf planet. Marcia Dunn, The Seattle Times, "Scrawny dwarf planet, named Goblin, found well beyond Pluto," 2 Oct. 2018 That set the expectations for the dwarf planets, which were thought to be cold and dead. John Timmer, Ars Technica, "Ice volcanoes have likely been erupting for billions of years on Ceres," 18 Sep. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dwarf planet.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of dwarf planet

1993, in the meaning defined above

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Last Updated

10 Mar 2019

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Time Traveler for dwarf planet

The first known use of dwarf planet was in 1993

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More Definitions for dwarf planet

dwarf planet

noun

Kids Definition of dwarf planet

: a heavenly body similar to a planet but too small to clear other objects from its orbit

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