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Search Result for "backup": 
Wordnet 3.0

NOUN (5)

1. an accumulation caused by clogging or a stoppage;
- Example: "a traffic backup on the main street"
- Example: "he discovered a backup in the toilet"

2. someone who takes the place of another (as when things get dangerous or difficult);
- Example: "the star had a stand-in for dangerous scenes"
- Example: "we need extra employees for summer fill-ins"
[syn: stand-in, substitute, relief, reliever, backup, backup man, fill-in]

3. a musical part (vocal or instrumental) that supports or provides background for other musical parts;
[syn: accompaniment, musical accompaniment, backup, support]

4. (computer science) a copy of a file or directory on a separate storage device;
- Example: "he made a backup in case the original was accidentally damaged or erased"
[syn: backup, computer backup]

5. the act of providing approval and support;
- Example: "his vigorous backing of the conservatives got him in trouble with progressives"
[syn: backing, backup, championship, patronage]


The Collaborative International Dictionary of English v.0.48:

backup \back"up\, n. 1. anything kept in reserve to serve as a substitute in case of failure or unavailability of the normal or primary object; -- used for devices, plans, people, etc. Also used attributively; as, there was no backup for the electrical supply; a backup motor; a backup generator. [PJC] 2. (Music) a musician or group of musicians accompanying a soloist, whether vocalists or instrumentalists. Syn: accompaniment. [PJC] 3. a person or group of persons serving as reinforcement for another or others; as, the policeman called for backup when he was fired on. [PJC] 4. an accumulation, overflow, or reverse flow (in traffic or a liquid flow system) caused by a stoppage or other malfunction. [PJC] 5. (Computers) A copy of a program or data from a computer onto a data-storage medium, usually one that may be removed to safe storage at a distance from the computer; it is used to preserve data for use in the contingency that the original data on the computer may be lost or become unusable. A backup that is removed from the building housing the computer system (to provide protection against loss of data in a disastrous event such as a fire) is called off-site backup. Also used attributively; as, backup copy. [PJC] 6. (Computers) The act or process of creating a backup[5]; as, they performed a full system backup every weekend. [PJC] Backward
WordNet (r) 3.0 (2006):

backup n 1: an accumulation caused by clogging or a stoppage; "a traffic backup on the main street"; "he discovered a backup in the toilet" 2: someone who takes the place of another (as when things get dangerous or difficult); "the star had a stand-in for dangerous scenes"; "we need extra employees for summer fill- ins" [syn: stand-in, substitute, relief, reliever, backup, backup man, fill-in] 3: a musical part (vocal or instrumental) that supports or provides background for other musical parts [syn: accompaniment, musical accompaniment, backup, support] 4: (computer science) a copy of a file or directory on a separate storage device; "he made a backup in case the original was accidentally damaged or erased" [syn: backup, computer backup] 5: the act of providing approval and support; "his vigorous backing of the conservatives got him in trouble with progressives" [syn: backing, backup, championship, patronage]
Moby Thesaurus II by Grady Ward, 1.0:

104 Moby Thesaurus words for "backup": about-face, about-turn, advocate, agent, alter ego, alternate, alternative, amicus curiae, analogy, attorney, back track, back trail, backing, backing off, backing out, backing up, backup man, champion, change, changeling, comparison, copy, counterfeit, deputy, double, dummy, equal, equivalent, ersatz, exchange, executive officer, exponent, fake, figurehead, fill-in, ghost, ghostwriter, imitation, lieutenant, locum, locum tenens, makeshift, metaphor, metonymy, mock, next best thing, paranymph, personnel, phony, pinch, pinch hitter, pleader, procurator, provisional, proxy, relief, replacement, representative, reserve, reserves, reversal, reverse, reversing, reversion, right-about, right-about-face, ringer, second in command, second string, secondary, sign, spare, spares, stand-in, stopgap, sub, substituent, substitute, substitution, succedaneum, superseder, supplanter, surrogate, swingaround, symbol, synecdoche, temporary, tentative, third string, token, turnabout, turnaround, understudy, utility, utility man, utility player, vicar, vicar general, vicarious, vice, vice-president, vice-regent, vicegerent, volte-face
The Free On-line Dictionary of Computing (18 March 2015):

backup ("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)