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backup noun

  /ˈbækˌʌp/
  • (computing) A copy of a file or record, stored separately from the original, that can be used to recover the original if it is damaged or destroyed.
back-up, reservekopie
  • A reserve or substitute.
reserve

backup adjective

  /ˈbækˌʌp/
  • Standby, reserve or extra.
  • (computing) That is intended as a backup.
reserve
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