string theory

noun

: a theory in physics: all elementary particles are manifestations of the vibrations of one-dimensional strings

Examples of string theory in a Sentence

Recent Examples on the Web
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With this approach, if assumptions X, Y, and Z are true of our universe, then string theory is true. Quanta Magazine, 23 Mar. 2026 In a nutshell, string theory is a sprawling realm of theoretical physics that assumes that tiny vibrating strings are the fundamental basis of reality. Lee Billings, Scientific American, 13 Jan. 2026 But the ability to explain the weakness of gravity uses the same fundamental concept, without dragging string theory along for the ride. Paul Sutter, Space.com, 23 Nov. 2025 Sound is also an important element in the film, encapsulating creation myths about sound and vibration being the source of all matter, ideas which are also present in string theory and quantum mechanics. Liz Shackleton, Deadline, 21 Sep. 2025 See All Example Sentences for string theory

Word History

First Known Use

1973, in the meaning defined above

Time Traveler
The first known use of string theory was in 1973

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Cite this Entry

“String theory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/string%20theory. Accessed 28 Mar. 2026.

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