• Compression (physical), the result of the subjection of a material to compressive stress
• Compression member
  Compression member
  A compression member is a general class of structural elements of which a column is the most common specific example.-Description:For a compression member, such as a column, the principal stress comes mainly from axial forces, that is forces that fall along one line, usually the centerline.The...
  
  , 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
  Compression ratio
  The 'compression ratio' of an internal-combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its largest capacity to its smallest capacity...
  
  , a figure of merit of an internal-combustion engine
• Compression (geology)
  Compression (geology)
  In geology the term compression refers to a set of stresses directed toward the center of a rock mass. Compressive strength refers to the maximum compressive stress that can be applied to a material before failure occurs. When the maximum compressive stress is in a horizontal orientation, thrust...
  
  , a system of forces that tend to decrease the volume of rocks

• Data compression
  Data compression
  In computer science and information theory, data compression, source coding or bit-rate reduction is the process of encoding information using fewer bits than the original representation would use....
  
  , the process of encoding digital information using fewer bits
• Audio compression (data), the compression of digital audio streams and files
• Bandwidth compression
  Bandwidth compression
  In telecommunication, the term bandwidth compression has the following meanings:*The reduction of the bandwidth needed to transmit a given amount of data in a given time.*The reduction of the time needed to transmit a given amount of data in a given bandwidth....
  
  , a reduction in either the time to transmit or in the amount of bandwidth required to transmit
• Compression artifact
  Compression artifact
  A compression artifact is a noticeable distortion of media caused by the application of lossy data compression....
  
  , noticeable defects in audio or video that has been compressed
• Image compression
  Image compression
  The objective of image compression is to reduce irrelevance and redundancy of the image data in order to be able to store or transmit data in an efficient form.- Lossy and lossless compression :...
  
  , the application of data compression on digital images
• Video compression, the compression of digital video streams and files
• Dynamic range compression, a compression process that reduces the dynamic range of an audio signal
• One-way compression function, a cryptographic primitive
  Cryptographic primitive
  Cryptographic primitives are well-established, low-level cryptographic algorithms that are frequently used to build computer security systems. These routines include, but are not limited to, one-way hash functions and encryption functions.- Rationale :...
  
  

• Gain compression
  Gain compression
  Gain compression is a reduction in 'differential' or 'slope' gain caused by nonlinearity of the transfer function of the amplifying device. This nonlinearity may be caused by heat due to power dissipation, or by overdriving the active device beyond its linear region...
  
  , in electronic amplifiers, a reduction in differential or slope gain resulting from device non-linearity

• 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 involves pressing on the lower abdominal area, resulting in distension of the upper urinary tract.

• Compression (functional analysis)
  Compression (functional analysis)
  In functional analysis, the compression of a linear operator T on a Hilbert space to a subspace K is the operatorP_K T \vert_K : K \rightarrow K...
  
  , the compression of a linear operator "T" on a Hilbert space to a subspace "K" is the operator

• Compression (phonetics), running syllables together in informal speech

• Compression (zoology) when an animal, or part of an animal, is shorter or narrower compared with other animals in the same group; e.g. the body of a lizard may be "compressed" (flattened) so it can better fit into crevices under rocks

See also

• Compaction (disambiguation)
• compress
  Compress
  Compress is a UNIX compression program based on the LZC compression method, which is an LZW implementation using variable size pointers as in LZ78.- Description of program :Files compressed by compress are typically given the extension .Z...
  
  
• Compression shorts
  Compression shorts
  Compression shorts are undergarments usually worn by athletes. They are form-fitting garments and when worn cover the athlete's waist to mid or lower thigh. These garments are often made from a spandex-type material, similar to cycling shorts....
  
  
• Compressor (disambiguation)
• Decompression (disambiguation)
• Expansion (disambiguation)