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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An object known as 3I/ATLAS made news in July when it was confirmed to have originated outside Earth's solar system. Eric Lagatta, AZCentral.com, 12 Dec. 2025 The observations represent the first study of gases leaking from a planet beyond the solar system during one of its complete orbits, and help paint the most complete picture of atmospheric escape thus far. Robert Lea, Space.com, 11 Dec. 2025 Despite the number of PHAs out in our solar system, none are likely to hit Earth any time soon. Soo Kim, MSNBC Newsweek, 11 Dec. 2025 Lego Technic Planet Earth and Moon in Orbit A Lego solar system will be a hit with space nerds, future astronauts, and anyone who knows science is actually cool. Jeaneen Russell, PEOPLE, 10 Dec. 2025 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 19 Dec. 2025.

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

More from Merriam-Webster on solar system

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