irreversible

  1. Adjective.  Incapable of being reversed or turned about or back; incapable of being made to run backward; as, an irreversible engine.
  2. Adjective.  Incapable of being reversed, recalled, repealed, or annulled; as, an irreversible sentence or decree.
  3. Adjective.  (thermodynamics) Incapable of being reversed to the original state without consumption of free energy and increase of entropy.

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This entry was last updated on RefTopia from its source on 3/20/2012.