general relativity

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The geometric theory of gravitation developed by Albert Einstein, incorporating and extending the theory of special relativity to accelerated frames of reference and introducing the principle that gravity is a consequence of matter causing a curvature in space-time.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun physics A theory extending special relativity and uniformly accounting for gravity and accelerated frames of reference, postulating that space-time curves in the presence of mass.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

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