1. The process of reducing pressure, especially the gradual reduction of atmospheric pressure on a diver returning to the surface
The diver had to undergo decompression stops to avoid the bends.
O mergulhador teve que fazer paradas de descompressão para evitar embolia.
2. The act or process of relieving stress, tension, or pressure
After a stressful day, he needed some decompression time.
Depois de um dia estressante, ele precisava de um tempo de descompressão.
3. In computing, the process of expanding compressed data to its original size
The file requires decompression before you can open it.
O arquivo requer descompressão antes de poder ser aberto.