solar system

noun

: the sun together with the group of celestial bodies that are held by its attraction and revolve around it
also : a similar system centered on another star

Examples of solar system in a Sentence

Recent Examples on the Web
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In the Project Hail Mary universe, all life in our solar system’s sector of the Milky Way comes from an ancient ancestor of Astrophage that long ago radiated out from Tau Ceti, Weir says. Emma Gometz, Scientific American, 20 Mar. 2026 Although researchers have so far identified over 6,000 exoplanets beyond our solar system, only a handful of them may be suitable for human visitors. Andrew Paul, Popular Science, 19 Mar. 2026 In the first two weeks of the war, there has been a surge in the number of Americans looking to save money on energy—by asking for quotes on home solar systems and looking up electric vehicles online. Bill McKibben, New Yorker, 18 Mar. 2026 Pluto was long considered the ninth and furthest planet in our solar system from the sun until it was controversially downgraded in 2006 in a vote by members of the International Astronomical Union. Eric Lagatta, AZCentral.com, 18 Mar. 2026 See All Example Sentences for solar system

Word History

First Known Use

circa 1704, in the meaning defined above

Time Traveler
The first known use of solar system was circa 1704

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Cite this Entry

“Solar system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/solar%20system. Accessed 27 Mar. 2026.

Kids Definition

solar system

noun
: a star with the group of heavenly bodies that revolve around it
especially : the sun with the planets, moons, asteroids, and comets that orbit it

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