Definition of defragment verb from the Oxford Advanced American Dictionary

 

defragment

 verb
verb
NAmE//ˌdiˈfræɡmɛnt//
 
(informal defrag
NAmE//ˌdiˈfræɡ//
 
)
defragment something(computing)Verb Forms present simple I / you / we / they defragment
 
he / she / it defragments past simple defragmented -ing form defragmenting
 
jump to other results
to organize the files on a computer so that information relating to each file is stored in the same area, so the computer works faster
See the Oxford Advanced Learner's Dictionary entry: defragment