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data compression

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Data Compression
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com⋅pres⋅sion

  [kuhm-presh-uhn]
–noun
1. the act of compressing.
2. the state of being compressed.
3. the effect, result, or consequence of being compressed.
4. (in internal-combustion engines) the reduction in volume and increase of pressure of the air or combustible mixture in the cylinder prior to ignition, produced by the motion of the piston toward the cylinder head after intake.
5. Also called data compression. reduction of the storage space required for data by changing its format.
Also, com⋅pres⋅sure  [kuhm-presh-er] (for defs. 1, 2).

Origin:
1350–1400; ME (< AF) < L compressiōn- (s. of compressiō), equiv. to compress(us) ptp. of comprimere to press together (see com-, press 1 ) + -iōn- -ion

Related forms:
com⋅pres⋅sion⋅al, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Cultural Dictionary

compression

See data compression.


data compression

A technique in information technology by which the same amount of data is transmitted by using a smaller number of bits; for example, by replacing a string of ten repeated digits with a command to repeat the digit ten times.

Note: Data compression is essential in technologies that transmit things like digitized movies in real time.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: com·pres·sion
Pronunciation: k&m-'presh-&n
Function: noun
: the act, process, or result of compressing especially wheninvolving a compressing force on a bodily part <compression of an artery by forceps> <compression of the brain by the bones of a depressed fracture>
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

compression com·pres·sion (kəm-prěsh'ən)
n.

  1. See condensation.

  2. The state of being compressed.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
compression   (kəm-prěsh'ən)  Pronunciation Key 

  1. A force that tends to shorten or squeeze something, decreasing its volume.

  2. The degree to which a substance has decreased in size (in volume, length, or some other dimension) after being or while being subject to stress. See also strain.

  3. The re-encoding of data (usually the binary data used by computers) into a form that uses fewer bits of information than the original data. Compression is often used to speed the transmission of data such as text or visual images, or to minimize the memory resources needed to store such data.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

data compression algorithm
compression. Probably to distinguish it from (electronic) signal compression.
(1995-04-02)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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