backup
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noun
1.
a person or thing that supports or reinforces another.
2.
a musician or singer or group of musicians or singers accompanying a soloist: a singer with a three-man backup that plays cello, bass, and guitar.
3.
an overflow or accumulation due to stoppage, malfunctioning, etc.: a sewage backup; a backup of cars at the tollbooth.
4.
a person, plan, device, etc., kept in reserve to serve as a substitute, if needed.
5.
Computers.
a.
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.
b.
a procedure to follow in such an event.
adjective
7.
(of a person, plan, device, etc.) held in reserve as a substitute if needed: a backup driver; a backup generator.
8.
performing a secondary or supporting function: A drummer and guitarist are the singer's backup musicians.
00:10
Backup
is always a great word to know.
So is slumgullion. Does it mean:
| a stew of meat, vegetables, potatoes, etc. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To backup
Etymonline
Online Etymology Dictionary, © 2010 Douglas Harper
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FOLDOC
Computing Dictionary
backup definition
operating system("back up" when used as a verb) A spare copy of a file, file system, or other resource for use in the event of failure or loss of the original.
The term commonly refers to a copy of the files on a computer's disks, made periodically and kept on magnetic tape or other removable medium (also called a "dump").
This essential precaution is neglected by most new computer users until the first time they experience a disk crash or accidentally delete the only copy of the file they have been working on for the last six months. Ideally the backup copies should be kept at a different site or in a fire safe since, though your hardware may be insured against fire, the data on it is almost certainly neither insured nor easily replaced.
See also backup software, differential backup, incremental backup, full backup. Compare archive, source code management.
(2004-03-16)
Example sentences
Geothermal can meet that, without any need for auxiliary storage or a backup system.
We got four backup singers and two go-go dancers, who were fun but seemed to be dancing at a different concert.
At a polo match she was spotted with a two-way radio in case she required backup.
Solar water heating systems almost always require a backup system for cloudy days and times of increased demand.
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