- a copy or duplicate version, especially of a file, program, or entire computer system, retained for use in the event that the original is in some way rendered unusable.
- a procedure to follow in such an event.
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Origin of backup
usage note for backup
WORDS THAT MAY BE CONFUSED WITH backupback up, backup .
Words nearby backup
Example sentences from the Web for backup
Sometimes, they had a backup aim if their main goal fell through as the night dragged on.The Craziest Date Night for Single Jews, Where Mistletoe Is Ditched for Shots|Emily Shire|December 26, 2014|DAILY BEAST
In early October, Health Republic allowed me to submit a “grievance claim” which I filed, along with a pile of backup documents.
At 12:02 p.m., Wilson called in his location and asked the dispatcher for backup.
Backup dancers materialize, sparking a torrent of eye-catching choreography.The Making of Kiesza: From Navy Sharpshooter to Beauty Queen to Pop Diva|Marlow Stern|October 20, 2014|DAILY BEAST
She retreated into the lobby, but only to call for backup and an ambulance.Manhunt for a Cop-Hating Pennsylvania ‘Survivalist’|Michael Daly|September 17, 2014|DAILY BEAST
My cochlea struck twelve noon and a HUD appeared with my weekly backup reminder.
Now she was off to restore herself from a backup made before she met me.
She could swap out a dead bot for a backup in five minutes flat, which is all that crowd-control would permit.
You were restored from a backup about eight weeks ago, I see.
“Debra had herself refreshed from backup after we planned it,” Dan went on, as though no one was talking.
British Dictionary definitions for backup
- a reserve or substitute
- (as modifier)backup troops
- musical accompaniment, esp for a pop singer
- (as modifier)backup singer
Idioms and Phrases with backup
Move or drive a vehicle backward, as in He told her to back up into the garage. [First half of 1800s]
Bring or come to a standstill, as in The water had backed up in the drains, or The accident had backed up traffic for miles. [First half of 1800s]
Support or strengthen, as in The photos were backed up with heavy cardboard so they couldn't be bent, or I'll back up that statement of yours. [Second half of 1700s]
Duplicate a file or program so that the original is not lost. For example, Every computer manual warns you to back up your work frequently in case of a power outage or computer failure. [Second half of 1900s]