Stationary

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Stationary can mean:

  • Not moving (fixed in position, immobile, motionless, static, or at rest).
  • Unchanging (for instance in measure, mode, condition, character).
  • In statistics and probability: a stationary process.
  • In mathematics: a stationary point.
  • In mathematics: a stationary set.
  • In physics: a time-invariant quantity, such as a constant position or temperature.
  • In physics: a steady state physical process, such as a vibration at constant amplitude and frequency or a steady fluid flow.

The word or its spelling is sometimes confused with stationery, meaning paper or office supplies.

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