binary system

noun

: binary star
also : a similar system containing bodies (such as black holes) other than stars

Examples of binary system in a Sentence

Recent Examples on the Web
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While it has long been known that most massive stars exist in binary systems, direct evidence of one exchanging mass shortly before exploding is exceptionally rare. Bojan Stojkovski, Interesting Engineering, 16 Aug. 2025 Combined with real-time AI detection, observations gathered by the Rubin Observatory will enable astronomers to identify and study more of these rare, complex events, helping to build a clearer picture of how massive stars live and die in binary systems. Sharmila Kuthunur, Space.com, 13 Aug. 2025 But that binary system is not the only option for these machines. Manon Bischoff, Scientific American, 18 July 2025 Gravitational waves are the only way scientists can observe a collision in a binary system in which two black holes orbit each other. Jacopo Prisco, CNN Money, 16 July 2025 See All Example Sentences for binary system

Word History

First Known Use

1802, in the meaning defined above

Time Traveler
The first known use of binary system was in 1802

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Cite this Entry

“Binary system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/binary%20system. Accessed 5 Sep. 2025.

Kids Definition

binary system

noun
: a system of two objects that revolve around each other
especially : binary star

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