relativity

/ɹɛləˈtɪvɨti/

noun

  1. 1

    The state of being relative to something else.

  2. 2

    The principle that the laws of physics should be the same for all observers.

  3. 3

    Either of two theories (special relativity or general relativity) developed by German-American physicist Albert Einstein. Also called Einsteinian relativity.

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