Compression

Compression may refer to:

Physical science

• Compression (physics), the result of the subjection of a material to compressive stress
• Compression member, a class of structural elements, of which a column is the most common specific example
• Compressibility, a measure of volume change resulting from pressure
• Gas compression, raising the pressure and reducing the volume of gases
• Compression ratio, a figure of merit of an internal-combustion engine
• Compression (geology), a system of forces that tend to decrease the volume of rocks
• Compression strength or [[Compressive strength]

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Information science

• Data compression, the process of encoding digital information using fewer bits
• Audio compression (data), the compression of digital audio streams and files
• Bandwidth compression, a reduction in either the time to transmit or in the amount of bandwidth required to transmit
• Compression artifact, noticeable defects in audio or video that has been compressed
• Image compression, the application of data compression on digital images
• Video compression, the compression of digital video streams and files
• One-way compression function, a cryptographic primitive
• Dynamic range compression, a compression process that reduces the dynamic range of an audio signal

Medicine

• Brain compression, a potentially fatal condition where pressure is exerted on the brain by internal bleeding
• Compression bandage, a bandage that uses compression to reduce the flow of blood
• Compression in pyelography, pressing on the lower abdominal area in intravenous pyelogram
• Condensation (psychology) in Freudian psychology
• Cold compression therapy, to alleviate the pain of minor injuries

Other

• Gain compression, in electronic amplifiers, a reduction in differential or slope gain resulting from device non-linearity
• Compression (functional analysis), the restriction of an operator on a Hilbert space to a subspace, obtained by orthogonal projection
• Compression (phonetics), running syllables together in informal speech
• Compression (zoology), when an animal (or part of) is smaller compared with other animals in the same group, for example the Yellow jack

See also

• All pages with titles beginning with Compression
• All pages with titles containing Compression
• Compaction (disambiguation)
• Compress
• Compression garment
• Compressor (disambiguation)
• Decompression (disambiguation)
• Expansion (disambiguation)