Definition of compression noun from the Oxford Advanced Learner's Dictionary

     

    compression

     noun
    noun
    BrE BrE//kəmˈpreʃn//
     
    ; NAmE NAmE//kəmˈpreʃn//
     
    [uncountable]
     
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  1. 1compression (of something) (into something) the act of pressing or squeezing something together or into a smaller space the compression of air
  2. 2compression (of something) (into something) the act of reducing something and fitting it into a smaller space or amount of time the compression of both plays into a single three-hour drama
  3. 3(computing) the act of making computer files, etc. smaller so that they use less space on a disk, etc. data compression opposite decompression