Definition that contains special relativity
- general relativity a generalization of special relativity to include gravity (based on the principle of equivalence)
- general relativity theory a generalization of special relativity to include gravity (based on the principle of equivalence)
- general theory of relativity a generalization of special relativity to include gravity (based on the principle of equivalence)
- einstein's general theory of relativity a generalization of special relativity to include gravity (based on the principle of equivalence)