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Noun: relativity  ,re-lu'ti-vu-tee
  1. The quality of being relative and having significance only in relation to something else
    "The relativity of wealth became apparent when comparing different countries"
     
  2. (physics) the theory that space and time are relative concepts rather than absolute concepts
    "Einstein's theory of relativity revolutionized our understanding of the universe";
    - theory of relativity, relativity theory, Einstein's theory of relativity

Derived forms: relativities

Type of: quality, scientific theory

Encyclopedia: Relativity