relativity

/ˌrɛləˈtɪvəti/
noun
  1. The state of being dependent on or connected to something else; the idea that something is not absolute but depends on the situation or point of view.
    • The relativity of beauty means that different cultures have different standards.
    • In ethics, some people argue for the relativity of moral rules across societies.
    • The relativity of time is a concept that even young children can grasp when they say 'time flies when you're having fun.'
  2. Einstein's theory of relativity: the scientific idea that measurements of space, time, and motion are not absolute but depend on the observer's frame of reference.
    • Einstein's theory of relativity changed how scientists understand gravity.
    • Many science fiction movies play with ideas from relativity, like time dilation.
    • Learning about relativity in physics class made me rethink the nature of the universe.
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