1 [with object] relieve of compressing forces, in particular.
subject (a diver) to decompression:when a worker is suddenly decompressed, he should be placed in the airlock
expand (compressed data) to its normal size so that it can be read and processed by a computer:it takes less time to load a small file and decompress it than to pull a larger file off the disk
2 [no object]North American informal calm down and relax:Michael sits for a minute to decompress before walking home
decompress in other Oxford dictionaries
Definition of decompress in the US English dictionary
