decompression

noun

• a release of compressing forces, in particular.
• reduction in air pressure:decompression of the aircraft cabin
• a gradual reduction of air pressure on a person who has been experiencing high pressure while diving, in order to prevent decompression sickness.
• the process of expanding computer data to its normal size so that it can be read by a computer.
• a surgical procedure that relieves excessive pressure on an internal part of the body such as the cranium or spinal cord.