Decompression refers to a process in which gas or air is gradually released from a container, system, or environment. This can occur naturally as a result of changes in pressure or temperature, or it can be done intentionally through mechanical means such as valves or compressors. Decompression can also refer to the act of reducing stress or tension after experiencing a high-pressure situation, often used metaphorically to describe taking time for oneself to unwind and relax.