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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
Its companions, known as T Tauri South A and B, make up a binary system that's 100 astronomical units (9.3 billion miles/14.9 billion kilometers) away from the main star and orbit around T Tauri North once every 4,600 years.
—
Keith Cooper, Space.com, 23 Jan. 2025
The model accurately predicted the binary system’s orbit today, lending further confidence in its reliability.
—
Margherita Bassi, Smithsonian Magazine, 9 Jan. 2025
The research team is already planning additional studies to uncover more of Pluto’s mysteries and learn more about binary systems.
—
Monica Cull, Discover Magazine, 6 Jan. 2025
This outburst ejects powerful jets, seen as filaments shooting out from the binary system, forming loops and trails as the plasma emerges in streamers.
—
Alan Taylor, The Atlantic, 23 Dec. 2024
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Word History
First Known Use
1802, in the meaning defined above
Dictionary Entries Near binary system
Cite this Entry
“Binary system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/binary%20system. Accessed 11 Feb. 2025.
Kids Definition
binary system
noun
: a system of two objects that revolve around each other
especially
: binary star
More from Merriam-Webster on binary system
Britannica.com: Encyclopedia article about binary system
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