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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For example, string theory assumes a certain number of extra dimensions — a number that is not predicted by the theory itself. Paul Sutter, Space.com, 21 May 2025 In string theory, Calabi-Yau geometries involve the compactification of higher dimensions. Ramin Skibba, Scientific American, 13 May 2025 Understanding Einstein's space-time revolution — What are gravitational waves? — What is string theory? Sharmila Kuthunur, Space.com, 16 May 2025 This is where the Calabi-Yau geometric structures, normally associated with string theory, come in. Ramin Skibba, Scientific American, 13 May 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

Browse Nearby Words

Cite this Entry

“String theory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/string%20theory. Accessed 5 Jun. 2025.

More from Merriam-Webster on string theory

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!