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grand unification theory

noun, Physics.
1.
a possible future quantum field theory that would encompass both the electroweak theory and quantum chromodynamics.
Abbreviation: GUT.
Also called grand unified theory.
Origin
1980-1985
1980-85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for grand unified theory

grand unified theory

noun
1.
(physics) any of a number of theories of elementary particles and fundamental interactions designed to explain the gravitational, electromagnetic, strong, and weak interactions in terms of a single mathematical formalism GUT
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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grand unified theory in Science
grand unified theory
  (grānd)   
See unified field theory.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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grand unified theory in Culture
Grand Unified Theory (GUT)

A theory that describes the behavior of matter at temperatures that existed only in the first fraction of a second after the Big Bang. In these theories, the strong, weak, and electromagnetic forces are unified. The greatest triumph of GUTs is that they explain the absence of antimatter in the universe. (See also unified field theory.)

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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