DECOMPRESSION

decompression, decompressing

(noun) relieving pressure (especially bringing a compressed person gradually back to atmospheric pressure)

decompression

(noun) restoring compressed information to its normal form for use or display

Source: WordNet® 3.1

Etymology

Noun

decompression (usually uncountable, plural decompressions)

The process of decompressing.

The restoration to atmospheric pressure of a person who has spent time under higher pressure (such as a diver)

Mode of operation of some internal combustion engines that makes them easier to start, but significantly increases fuel consumption.

(medicine) The relief of pressure on a body part by surgery

Source: Wiktionary