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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During this stage, mass loss from the donor star causes the orbital period of the binary system to increase, with the white dwarf and companion star moving away from each other. Robert Lea, Space.com, 3 July 2025 Novas occur when two stars revolving around each other, called a binary system, create a thermonuclear explosion. Elizabeth Gamillo, Smithsonian Magazine, 3 July 2025 This form of stellar explosion occurs when the gravitational influence of a white dwarf star orbiting in a binary system strips mass from its nearby companion. Anthony Wood, Space.com, 26 June 2025 It's thought to be a classical nova, an outburst in a binary system where a white dwarf (the dense leftover core of a dying sun-like star) and an expanding red giant star orbit each other. Jamie Carter, Forbes.com, 24 June 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 19 Jul. 2025.

Kids Definition

binary system

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

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