de·​frag·​ment (ˌ)dē-ˈfrag-mənt How to pronounce defragment (audio)
defragmented; defragmenting; defragments

transitive verb

: to reorganize separated fragments of related data on (a computer disk) into a contiguous arrangement
defragmentation noun

Examples of defragment in a Sentence

I defragmented my hard drive.
Recent Examples on the Web The Neuroskeptic for two great posts on whether sleep give us a chance to defragment out brains, and how random chance acts as our third parent. Vaughan Bell for his look at riot psychology in the wake of the UK riots, and why crowd behaviour is a complex area that’s surprisingly poorly researched. Ed Yong, Discover Magazine, 2 Sep. 2011

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'defragment.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1983, in the meaning defined above

Time Traveler
The first known use of defragment was in 1983

Dictionary Entries Near defragment

Cite this Entry

“Defragment.” Dictionary, Merriam-Webster, Accessed 13 Jun. 2024.

Kids Definition


de·​frag·​ment (ˌ)dē-ˈfrag-mənt How to pronounce defragment (audio)
: to reorganize fragments of computer data on (a computer disk) into a continuous series
defragment the hard drive
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