Definition of backup in English:



  • 1Help or support.

    ‘no police backup could be expected’
    • ‘Several minutes later a call for backup came over the police radio.’
    • ‘The support and backup are great, and I can now help clients with a complete range of legal services, not just the ones I specialize in.’
    • ‘Calling for backup, the police then arrested several more onlookers who had entered into the fray.’
    • ‘Yet she had to meet that demand without any of the formal backup that a minister or minor royal would take for granted.’
    • ‘A support boat will provide backup throughout the challenge.’
    • ‘Police immediately called for backup feeling that the scene was becoming too unsettled.’
    • ‘The next meeting will take place in November and will include such items as assessment, support and backup.’
    • ‘As a police officer, he has access to certain assault weapons and handguns, as well as receiving a certain amount of backup from other police officers.’
    • ‘When confidence and good fortune stops, you need backup and we have not got that kind of support.’
    • ‘If they suspect someone of being armed then they will need to call for backup from regular police as the community officers will not have the training or equipment to deal with suspected armed people.’
    • ‘Junior nurses have no backup or support and become disillusioned and leave.’
    • ‘These were people who were never out of their own parish and they were sent to England without any sort of backup or support.’
    • ‘Once he got to seven he turned to go down and noticed the police had called backup because their numbers had tripled.’
    • ‘Instead, like a Mafia boss, he provided protection, backup, and a reputation for brutality in return for a cut of the take.’
    • ‘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.’
    • ‘Her face was ashen as she fumbling with her helmet, and I realized that her life support and backup had failed.’
    • ‘They wanted to ask corporate management for additional funds but needed financial backup to support their request.’
    • ‘We've a lot of air support and a lot of backup as opposed to these small covert wars that we've been used to fighting.’
    • ‘Of the people surveyed 14 per cent said they had pet insurance, compared to 20 per cent of companies which have external support or backup.’
    • ‘‘We found the transmitter within an hour and called police for backup,’ one of the enforcement officers told us.’
    help, support, assistance, aid
    reinforcements, reserves, additional resources
    View synonyms
    1. 1.1 A 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’
      • ‘Emergency backup generators will not be adequate to maintain even a rudimentary water supply.’
      • ‘With both the main generators and their backup out of service, the plant's cooling system was dependent on batteries, which last eight hours.’
      • ‘The most serious incident was compounded by the failure of a battery powered backup generator in the air traffic control tower.’
      • ‘If your backup generator isn't powering the refrigerator, raid it for the food, but don't open the door more than necessary.’
      • ‘The backup diesel generators in their facilities were designed only to handle critical loads, not full operations.’
      • ‘Some roles never were fully established, including second base, backup catcher and setup reliever.’
      • ‘The original cornice was sheared off from the existing backup stone and replaced with new marble.’
      • ‘You've got a budget of $60 million and $10 million is reserved for backup players.’
      • ‘Two other team members should be assigned to provide backup power and establish alternate communication systems.’
      • ‘Most backup diesel generators burn distillate fuel oil, the same fuel used for heating and for aircraft.’
      • ‘When she was sure that they had all gone, she informed the police backup that they were to arrest any reporter they saw that came within eyeshot of the post office.’
      • ‘These backup forces are demoralized and headed for the door.’
      • ‘But if you have an electric stove, it requires so much power that many backup generators won't be able to run it.’
      • ‘The club still is looking for improved defense, speed, a backup catcher and a reserve outfielder.’
      • ‘I live up on a mountain, and I have a generator for backup power.’
      • ‘He will serve as the primary backup at second and third and possibly at first, and he also could play at shortstop or a corner outfield spot.’
      • ‘The Government is determined to bring in all necessary scientific backup to monitor the pollution risk and vowed to allocate whatever resources were required.’
      • ‘Or, combine your backup generator with a renewable energy system, and declare your total independence from the grid!’
      • ‘Our plan would thus be incomplete without a provision for backup forces, included in most proposals for a rapid reaction force.’
      • ‘Despite this redundancy, there are also backup generators.’
  • 2Computing
    The procedure for making extra copies of data in case the original is lost or damaged.

    ‘automatic online backup’
    [as modifier] ‘a backup system’
    • ‘A built in backup system enables data backup to a tape or hard drive.’
    • ‘The software giant went on to warn that the danger from shoddy backup procedures will be compounded by what it predicts will be sharp increases in the number of laptops being damaged or stolen.’
    • ‘Online backup is actually more secure than storing unencrypted data tapes in a remote vault.’
    • ‘To ease the procedure you can use some automatic backup software.’
    • ‘The good thing about online backup is, it's accessible from anywhere with an internet connection.’
    • ‘Also, let's say that you have no backup storage devices, and you have some large files that wouldn't fit on another partition.’
    • ‘So, as you build your computer data backup system, be sure to document your test procedures into handy checklists.’
    • ‘Computer hell is the place for computers without computer backup.’
    • ‘There are plenty of free and trial backup products available for download or purchase online.’
    • ‘They also help me forget about rational things like computer backup and backup software.’
    • ‘The owner is responsible for maintaining the system, including making backup copies of all project data on a regular basis.’
    • ‘When astronauts leave Earth, many plans, procedures, and backup systems are in place for their comfort and survival.’
    • ‘It might ask about the partner's incident response plan or backup procedures, for example.’
    • ‘Copy and move functions include replication, remote mirroring, and online backup.’
    • ‘We used a feature in both backup apps to simply replicate the folder, so that compression overhead wasn't a factor.’
    • ‘The best solution is to make backup automatic, and there are many ways to do that depending on how much you are willing to pay.’
    • ‘Software upgrades routine backup and restore procedures will also take much less time.’
    • ‘A similar volume is likely to be sold for use as backup storage for notebook and desktop computers.’
    • ‘It collects backup streams from several computers and writes them all to tape together with headers identifying their origins.’
    • ‘He has insisted that his company's software was meant to let consumers innocently make backup copies of their DVDs and computer games.’
    1. 2.1 An extra copy of data from a computer.
      • ‘Copying a CD or DVD is a way to sample the movie or disc and then keep it as a backup once you go out and buy the industry packaged version.’
      • ‘If it disappeared, then the actual copy would be gone, but not the backup.’
      • ‘First make a good backup of all of your data on some media like CD or memory stick and keep it safe at home.’
      • ‘You are allowed to copy it as a backup, unless specific provisions for replacement in the event of damage are provided by the manufacturer.’
      • ‘This friend had just recently reminded him that the backup existed.’
      • ‘Retrieving the backup from the district mainframe required calling the school IT person in from home who was less than thrilled.’
      • ‘Be sure to make a backup before you start fooling around with those keys.’
      • ‘I just found and loaded up a backup of my eudora install, circa late 1996.’
      • ‘I feel that a minor TV personality ought to be presenting me with a USB memory stick backup of the whole blog, dipped in gold paint, and mounted in a glass case on a bed of crimson velvet.’
      • ‘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’
    • ‘Film crews, often causing traffic backups, are steadily becoming a common sight around the Joburg, as the city's reputation as a filmmaking destination spreads.’
    • ‘Now, one other thing we want to show you, and that is some of the backups on these county roads.’
    • ‘Imagine if we never again had people darting across three lanes of traffic to avoid a traffic backup or to get off on an exit at the last minute.’
    • ‘Likewise a durable waterproofing system needs to be implanted to stop water leakage from drainage backups or root puncture that could damage apartments below.’
    • ‘I was stuck in traffic, a mile-long backup that showed no sign of abating anytime soon.’
    • ‘This led to massive traffic backups in one of the busiest parts of the city.’
    • ‘And it could simply be that there are some backups due to that single runway situation earlier.’
    • ‘She said no Plum homes in the Plum Creek section had backups during the flooding.’
    • ‘Because almost five percent of total domestic flights go through O'Hare, the problems in Chicago create a ripple of backups elsewhere.’
    • ‘Those are the worst cities, but every city that has a population over that of Denver's is seeing major traffic backups.’
    • ‘A midblock crosswalk will completely disrupt the already short Grand-Snelling intersection, causing severe backups on both sides of the light.’
    • ‘Both are constricting and reduce the flow of toxins, causing backups.’
    • ‘Do not, however, take steps on your own if the water contains sewage, such as from a toilet backup.’
    • ‘Major interstates are now northbound, but it's slow going, with traffic backups across the region.’
    • ‘Now, I am going issue the warning right now, that this is going to cause a backup in many airports.’
    • ‘Along with human waste and other sewage, solid waste has inundated Baghdad's streets for decades, contributing to sewer backups, disease, and a tainted water supply.’