decompression Definition

to release from pressure or compression

to convert (something, such as a compressed file or signal) to an expanded or original size

to undergo release from pressure; especially : relax

a sometimes fatal condition that is caused by the release of gas bubbles typically of nitrogen as it leaves its dissolved form throughout the body upon a rapid decrease in barometric pressure (such as that experienced by the rapid ascent of a diver from a deep dive or the rapid ascent of a pilot to high altitudes in a poorly pressurized aircraft) and that is marked chiefly by joint pain which may be accompanied in mild forms by fatigue and itching or burning of the skin and in more severe forms by shortness of breath, chest pain, paralysis, and confusion —called also bends, caisson disease

a small room that allows a person (such as an ocean diver) to slowly experience lower amounts of air pressure until normal air pressure is reached