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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Intriguingly, the lunar surface is littered with craters that record the chaotic early days of the solar system when planets and asteroids were smashing into one another. Ashley Strickland, CNN Money, 21 Feb. 2026 One of the most exciting missions to ever journey to the outer solar system has the be the Dragonfly multi-rotor helicopter that will head to Saturn's moon Titan in 2028. Space.com Staff, Space.com, 21 Feb. 2026 One of his most notable accomplishments was a paper published in 2007 about the presence of water on a distant planet outside our solar system. Clara Harter, Los Angeles Times, 20 Feb. 2026 Much of Loeb’s focus has been on the surprising behavior of interstellar objects passing through the solar system. Lee Billings, Scientific American, 20 Feb. 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 23 Feb. 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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