1. (physics) the theory that space and time are relative concepts rather than absolute concepts
   - relativity, theory of relativity, relativity theory

Type of: scientific theory

• live in
• relative-in-law
• relatively
• relativise
• relativism
• relativistic
• relativistic mass
• relativistically
• relativity
• relativity theory
• relativize
• relator
• relatum
• relaunch
• relax
• relaxant
• relaxation
• relaxation behavior
• relaxation method
• relaxation time
• relaxed
• relaxer
• relaxin
• relaxing
• relay