Definition of defrag in English:


Syllabification: de·frag
Pronunciation: /dēˈfrag

verb (defrags, defragging, defragged)

[with object] Computing
  • short for defragment.
    More example sentences
    • I have more important chores, like formatting and defragging my floppies.
    • After every test, all drives were defragged and the system was rebooted.
    • I spend a good chunk of time trying to track down the problem - running diagnostics, defragging the hard drive, updating drivers, etc.


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  • An instance of defragging a disk, or the utility that does this.
    More example sentences
    • If you run the defrag utility (normally found on Start-Programs-Accessories-System Tools) once a month, your PC will be a lot happier for it.
    • I've scanned my system for viruses, cleaned my hard drive using the defrag utility, and use scandisk to check for file-system errors.
    • This week the article caught my interest - as on many Computer Group forums - the defrag utility is plagued with many problems.

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