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

     

    decompression

     noun
    noun
    BrE BrE//ˌdiːkəmˈpreʃn//
     
    ; NAmE NAmE//ˌdiːkəmˈpreʃn//
     
    [uncountable] Diving
     
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  1. 1a reduction in air pressure; the act of reducing the pressure of the air a decompression chamber (= a piece of equipment that divers sit in so that they can return slowly to normal air pressure after being deep in the sea) decompression sickness (= severe pain and difficulty in breathing experienced by divers who come back to the surface of deep water too quickly) see also bend See related entries: Diving
  2. 2(specialist) the act or process of allowing something that has been compressed (= made smaller) to fill the space that it originally took up The computers have built-in video decompression capabilities.
See the Oxford Advanced American Dictionary entry: decompression