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WordNet (3.0)
general relativity
(n)a generalization of special relativity to include gravity (based on the principle of equivalence), Syn.Einstein's general theory of relativity, general theory of relativity, general relativity theory
relativity
(n)(physics) the theory that space and time are relative concepts rather than absolute concepts, Syn.relativity theory, theory of relativity, Einstein's theory of relativity
special relativity
(n)a physical theory of relativity based on the assumption that the speed of light in a vacuum is a constant and the assumption that the laws of physics are invariant in all inertial systems, Syn.special relativity theory, special theory of relativity, Einstein's special theory of relativity
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