Definition of backup in English:

Share this entry


Pronunciation: /ˈbakˌəp/


1Help 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
1.1A person or thing that can be called on if necessary; a reserve: I’ve got a security force as backup the filter is an excellent backup to other systems [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 The procedure for making extra copies of data in case the original is lost or damaged: automatic online backup [as modifier]: a backup system
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.
2.1An extra copy of data from a computer.
Example sentences
  • You are allowed to copy it as a backup, unless specific provisions for replacement in the event of damage are provided by the manufacturer.
  • If it disappeared, then the actual copy would be gone, but not the backup.
  • The hosting company should have a backup of the site.
3North American An overflow caused by a stoppage, as in water or automobile traffic: 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.
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.