string theory

noun

Definition of string theory 

: 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

Even more disappointing for her is string theory, the most popular candidate for a unified theory of all the basic forces of nature. Graham Farmelo, WSJ, "‘Lost in Math’ Review: The Beauty Myth," 22 June 2018 This suggests string theory constitutes at least a step towards a theory of quantum gravity. Alexander Hellemans, Scientific American, "A Conversation with Thomas Hertog, One of Stephen Hawking’s Final Collaborators," 24 May 2018 The second argument for the existence of a multiverse arises from string theory, which holds that matter is ultimately composed not of particles but of unimaginably small, vibrating strings or loops of energy. Dan Falk /, NBC News, "What is the multiverse?," 22 May 2018 And unlike the standard theory of gravity, string theory can describe its interactions mathematically without getting strange infinities. Lorenzo Bianchi, Newsweek, "Was This Stephen Hawking's Theory of Everything?," 19 Mar. 2018 To date, there is no evidence that either string theory, inflation or the landscape is correct. Dennis Overbye, New York Times, "Joseph Polchinski, 63, Leading Theorist on Multiple Universes, Dies," 7 Feb. 2018 Several approaches to quantum gravity—most of all, string theory—now see entanglement as crucial. George Musser, Scientific American, "What Is Spacetime?," 8 May 2018 This unfinished task, to which string theory also aspires, is part of physicists’ quest for a theory of everything. Priyamvada Natarajan, WSJ, "‘The Order of Time’ Review: Stop All the Clocks," 1 June 2018 But instead of a single solution to this and other fundamental scientific questions, string theory’s equations seem to have a staggering number of possible solutions (perhaps as many as 10^500 — that’s a one followed by 500 zeros). Dan Falk /, NBC News, "What is the multiverse?," 22 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'string theory.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of string theory

1973, in the meaning defined above

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14 Sep 2018

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The first known use of string theory was in 1973

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More from Merriam-Webster on string theory

Britannica.com: Encyclopedia article about string theory

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