solar system


: 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

Example Sentences

Recent Examples on the Web An atom is like a little solar system, with a nucleus at its center. James Somers, The New Yorker, 25 Oct. 2022 So a soupy solar system is not likely to happen anytime soon. Jeffrey Kluger, Time, 24 Sep. 2022 Either way, home sellers can showcase the value of solar systems with the help of online tools, in addition to providing past energy bills and data about a solar system’s performance. Demetria Gallegos, WSJ, 10 Sep. 2022 Having a backup power generation source is typically not the primary reason that a homeowner would purchase a rooftop solar system, industry leaders say. Ron Hurtibise, Sun Sentinel, 4 Sep. 2022 The state solar incentive is equivalent to roughly 40% of the cost of a rooftop solar system, according to the Illinois Power Agency, or about $10,000 for a $25,000 system. Nara Schoenberg, Chicago Tribune, 2 Sep. 2022 The same is true in a solar system, Cyr-Racine explains. Manasee Wagh, Popular Mechanics, 1 June 2022 The academy invested in a rooftop solar system for the school’s operations and participates in net energy metering that exports surplus energy to the grid. Laura Groch, San Diego Union-Tribune, 22 May 2022 Astronomers have yet to find a solar system quite like ours. Ashley Strickland, CNN, 20 Nov. 2021 See More

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

Word History

First Known Use

circa 1704, in the meaning defined above

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

Dictionary Entries Near solar system

Cite this Entry

“Solar system.” Dictionary, Merriam-Webster, Accessed 4 Dec. 2022.

Kids Definition

solar system


: 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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