unified field theory

noun Physics.
any field theory, especially Einstein's, that attempts to combine the gravitational and electromagnetic fields in a single mathematical framework, thus extending the general theory of relativity.
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World English Dictionary
unified field theory
any theory capable of describing in one set of equations the properties of gravitational fields, electromagnetic fields, and strong and weak nuclear interactions. No satisfactory theory has yet been found

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American Heritage
Science Dictionary
unified field theory   (y'nə-fīd')  Pronunciation Key 
A theory that explains the four basic forces of nature (electromagnetism, gravity, strong force, and weak force) as manifestations of a single physical principle. No unified field theory that has been proposed so far has gained broad acceptance. Also called grand unified theory, theory of everything.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

unified field theory definition

Any theory in which two seemingly different forces are seen to be fundamentally identical. Maxwell's equations express a unified field theory that demonstrates the basic identity of electricity and magnetism, and the standard model postulates a basic identity for the strong force, the weak force, and electromagnetism.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
Those people aren't going to figure out a unified field theory.
The pair, it turned out, amounted to nothing less than a unified field theory of presidential conspiracy.
Here is the current update of trans dimensional unified field theory.
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