string theory

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string theory (countable and uncountable, plural string theories)

  1. (physics) A candidate unified theory of all physical forces and particles; a theory which suggests that subatomic particles are one-dimensional strings rather than zero-dimensional points. It also suggests that space-time can have up to nine dimensions, plus the dimension of time.
    String theory denies the existence of a hypothetical eleventh dimension.

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  • Burgess & Quevedo, "The Great Cosmic Roller-Coaster Ride", Scientific American, November 2007, pg. 57.