Definition of backup in English:


Line breaks: back|up
Pronunciation: /ˈbakʌp


  • 1 [mass noun] Help or support: no police backup could be expected
    More example sentences
    • Support groups providing backup for people to resist the cravings are available in Darwen and Accrington, with a new group expected to start in Clitheroe next month.
    • A support boat will provide backup throughout the challenge.
    • The next meeting will take place in November and will include such items as assessment, support and backup.
    help, support, assistance, aid; reinforcements, reserves, additional resources
  • 1.1Someone or something that can be called on if necessary; a reserve: I’ve got a security force as backup [as modifier]: a backup generator
    More example sentences
    • Our plan would thus be incomplete without a provision for backup forces, included in most proposals for a rapid reaction force.
    • The Government is determined to bring in all necessary scientific backup to monitor the pollution risk and vowed to allocate whatever resources were required.
    • You've got a budget of $60 million and $10 million is reserved for backup players.
  • 2 Computing A copy of a file or other item of data made in case the original is lost or damaged: make a backup of any important files [as modifier]: a backup copy
    More example sentences
    • So, as you build your computer data backup system, be sure to document your test procedures into handy checklists.
    • To ease the procedure you can use some automatic backup software.
    • Software upgrades routine backup and restore procedures will also take much less time.
  • 2.1 [mass noun] The procedure for making backup copies of files or other items of data: automatic online backup
    More example sentences
    • Make regular backups of your data files to separate file storage device.
    • Make simple backups and keep every copy of your Web or FTP site up to date with some standard tools that probably are already on your system.
    • I highly recommend this program to anyone who wants to make critical backups of important data.
  • 3North American An accumulation of something caused by a blockage, as in traffic or water: there are long backups on all routes
    More example sentences
    • Major interstates are now northbound, but it's slow going, with traffic backups across the region.
    • Those are the worst cities, but every city that has a population over that of Denver's is seeing major traffic backups.
    • This led to massive traffic backups in one of the busiest parts of the city.

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Word of the day skosh
Pronunciation: skəʊʃ
a small amount; a little