English > Einstein's theory of relativity: 1 sense > noun 1, cognition| Meaning | (physics) the theory that space and time are relative concepts rather than absolute concepts. |
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| Synonyms | relativity, theory of relativity, relativity theory |
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| Category of | event | A phenomenon located at a single point / point in space-time |
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| Category | physics, natural philosophy | The science of matter and energy and their interactions |
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| Narrower | general relativity, general theory of relativity, general relativity theory, Einstein's general theory of relativity | A generalization of special relativity to include gravity (based on the principle of equivalence) |
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| special relativity, special theory of relativity, special relativity theory, Einstein's special theory of relativity | 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 |
| Broader | scientific theory | A theory that explains scientific observations |
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| Spanish | relatividad, teoría de la relatividad |
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| Catalan | relativitat, teoria de la relativitat |
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