M-theory(redirected from Membrane Theory)
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|Noun||1.||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|
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"
string theory - (particle physics) a theory that postulates that subatomic particles are one-dimensional strings