Definition of grand unified theory in English:

grand unified theory


  • A theory attempting to give a single explanation of the strong, weak, and electromagnetic interactions between subatomic particles.

    • ‘Scientists had believed that once the shortcomings of particle physics had been left behind by the adoption of the exotic string theory, that a grand unified theory of everything would be an easily ascertainable goal.’
    • ‘Like physicists who are trying to make sense of the particles and forces that make up the physical world, knot theorists are looking for something akin to a grand unified theory that would explain all invariants and all knots.’
    • ‘Science still seeks for a grand unified theory.’
    • ‘In the latter stages it describes the structure of the cosmos in terms of galaxies and clusters, and ponders on matters such as whether a grand unified theory of everything can be created.’


grand unified theory