Definition of "general relativity theory" []

• A generalization of special relativity to include gravity (based on the principle of equivalence) (noun)

WordNet. Princeton University. 2010.

• "Building on the concept of the quanta, in 1923, almost a decade after Einstein published his general relativity theory no longer a theory; now it is a law, the French physicist Louis de Broglie introduced an idea that was even more bizarre in its assertions than Einstein’s claim that matter really was a form of energy."