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A theory in physics in which tiny stringlike objects have modes of vibration that correspond to elementary particles. Such objects exist in a spacetime that has more dimensions than the familiar three dimensions of space, some of which are thought to be exceedingly small. String theory seeks to unify gravity with quantum theory.
A theory in physics that views subatomic particles as string-like objects floating in space-time rather than as point-like objects. Space-time in string theory can have up to nine dimensions of space, plus the dimension of time.
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|Noun||1.||string theory - (particle physics) a theory that postulates that subatomic particles are one-dimensional strings|
framework, model, theoretical account - a hypothetical description of a complex entity or process; "the computer program was based on a model of the circulatory and respiratory systems"
M-theory - (particle physics) a theory that involves an eleven-dimensional universe in which the weak and strong forces and gravity are unified and to which all the string theories belong
théorie des cordes