field theory


Definition of field theory

: any theory in physics consisting of a detailed mathematical description of the assumed physical properties of a region under some influence (such as gravitation)

Examples of field theory in a Sentence

Recent Examples on the Web Effective field theory fixes the problem by accounting for the interplay between scales only down to a few times the distance between galaxies. Quanta Magazine, "Big Bang Secrets Swirling in a Fluid Universe," 12 Feb. 2014 Nothing thereafter came close, and his lifelong ambition, a unified field theory, escaped him. The Atlantic, "The Conversation," 18 Aug. 2019 In fact, most of us were outsiders to cosmology, doing our main work in the fields of particle physics and quantum-field theory. Frank Wilczek, WSJ, "An Appreciation: Frank Wilczek Remembers Stephen Hawking," 16 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'field 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 field theory

1922, in the meaning defined above

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The first known use of field theory was in 1922

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Cite this Entry

“Field theory.” Dictionary, Merriam-Webster, Accessed 11 Aug. 2020.

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