Compression

Compression could mean:

Gas compression, raising the pressure and reducing the volume of gases
Physical compression, the result of the subjection of a material to compressive stress
- Compression arch suspended-deck bridge, a compression arch rises above the deck
Compression, the part of a longitudinal wave where particles are the closest together
Compressibility, a measure of volume change resulting from pressure
Compression (geology), a system of forces that tend to decrease the volume of or shorten rocks.
Compression ratio, a number that predicts the performance of any internal-combustion engine
Data compression, encoding information using fewer bits
- Image compression
- Audio data compression
- Video compression
  - Compression artifact, noticeable defects in audio or video that has been compressed
- Bandwidth compression, in telecommunications
Gain compression in electronic amplifiers, which is a result of device non-linearity
Audio level compression, usually artificially introduced Gain compression to improve the perceived quality of audio
Compression (functional analysis), in mathematics
- Compression bandage, designed to reduce the flow of blood

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