binary star

noun

: a system of two stars that revolve around each other under their mutual gravitation

Examples of binary star in a Sentence

Recent Examples on the Web
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Detecting and analyzing these oddities can help Bédard, Sahu, and other researchers gain a more comprehensive understanding of the ultimate fate of many binary star systems. Andrew Paul Aug 6, Popular Science, 6 Aug. 2025 Research has shown that type Ia supernovae originate from some binary star systems containing at least one white dwarf. John W. Dean, MSNBC Newsweek, 7 Apr. 2025 The discovery means that Betelgeuse is a binary star system. Robin George Andrews, New York Times, 22 July 2025 Strange things start to happen as the Enterprise follows the Gorn closer to a binary star system. Keith Phipps, Vulture, 17 July 2025 See All Example Sentences for binary star

Word History

First Known Use

1826, in the meaning defined above

Time Traveler
The first known use of binary star was in 1826

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Cite this Entry

“Binary star.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/binary%20star. Accessed 19 Aug. 2025.

Kids Definition

binary star

noun
: a system of two stars that revolve around each other under the gravitation of both

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