decompression - definition and synonyms

noun [uncountable] 

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/ˌdiːkəmˈpreʃ(ə)n/
  1. 1
    the process of reducing the pressure on something
    1. a.
      the process of allowing your body to return to normal air pressure after you have been diving deep under water
  2. 2
    computing the process of decompressing a computer file