Definitions for "General theory of relativity"
Einstein's theory of gravity, in which the force of gravity is reinterpreted as a curvature of spacetime in the vicinity of a massive object.
a generalization of special relativity to include gravity (based on the principle of equivalence)
Einstein's theory that matter, space, and time are linked. The gravity of any mass, such as our Sun, deforms or warps the space-time around it and this in turn will alter the path taken by any objects (or light) that pass close by.