1. to reorganize fragmented data on a computer disk so that files are stored in contiguous blocks, improving access speed
Usage: computing; third person singular present tense or plural form of 'defragment'

Examples

• The utility defragments your hard drive automatically every week.
• She defragments her computer's disk to improve performance.
• Modern operating systems defragment storage devices less frequently than older systems did.
• The software defragments fragmented files that slow down your computer.
• He runs a tool that defragments the drive overnight.