Definitions of compression

  1. an increase in the density of something Scrapingweb Dictionary DB
  2. applying pressure Scrapingweb Dictionary DB
  3. encoding information while reducing the bandwidth or bits required Scrapingweb Dictionary DB
  4. the process or result of becoming smaller or pressed together; "the contraction of a gas on cooling" Scrapingweb Dictionary DB
  5. The act of making compact or of pressing together; condensation. The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919.
  6. A squeezing together, the exertion of pressure on a body in such a way as to tend to increase its density. A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
  7. Act of compressing: state of being compressed. The american dictionary of the english language. By Daniel Lyons. Published 1899.
  8. Act of compressing. The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894.
  9. The act of compressing, or the state of being compressed. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  10. The act of pressing into a narrower compass; the state of being compressed. Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914.
  11. The act of forcing into a narrower compass. Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
  12. 1. (Or "compaction") The coding of data to savestorage space or transmission time. Although data is alreadycoded in digital form for computer processing, it can often becoded more efficiently (using fewer bits). For example,run-length encoding replaces strings of repeated characters(or other units of data) with a single character and a count.There are many compression algorithms and utilities.Compressed data must be decompressed before it can be used.The standard Unix compression utilty is called compressthough GNU's superior gzip has largely replaced it. Othercompression utilties include pack, zip and PKZIP.When compressing several similar files, it is usually betterto join the files together into an archive of some kind(using tar for example) and then compress them, rather thanto join together individually compressed files. This isbecause some common compression algorithms build up tablesbased on the data from their current input which they havealready compressed. They then use this table to compresssubsequent data more efficiently.See also TIFF, JPEG, MPEG, Lempel-Ziv Welch,"lossy", "lossless".Compression FAQ(ftp://rtfm.mit.edu/pub/usenet/news.answers/compression-faq/).Web Content Compression FAQ(http://perl.apache.org/docs/tutorials/client/compression/compression.html).Usenet newsgroups: news:comp.compression,news:comp.compression.research.2. Reducing the dynamic range of an audio signal,making quiet sounds louder and loud sounds quieter. Thus,when discussing digital audio, the preferred term for reducingthe total amount of data is "compaction". Some advocate thisterm in all contexts. foldoc_fs
  13. reduction of the space required for storage (of binary data) by an algorithm which converts the data to a smaller number of bits while preserving the information content. The act of compressing {3}. dictgcide_fs
  14. Compressio, Enereisis. Same etymology. Pressure; methodical compression. An agent frequently had recourse to in surgery. We compress a limb, affected with oedema, varices, hydrops articuli, callous ulcer,&c. The abdomen is compressed after delivery, after paracentesis abdominis, &c. The compression is produced by means of the roller, laced stocking, &c., according to the part, and to the particular case. Moderate pressure aids the contractility of parts, and excites the action of the absorbents; so that large tumours at times disappear after it has been used for some time. A greater degree of pressure occasions, still more, the emaciation of the part, but it is apt to impede the circulation. Pressure is often used to stop or moderate the flow of blood in cases of aneurism or wounds of arteries and veins. In such cases, the compression may be immediate, when applied upon the artery itself, or it may be mediate, when applied through the integuments and soft parts. The French use the term Compression immediate laterale for that which is exerted perpendicularly to the axis of a vessel, so as to flatten its sides. It is practised with the finger, forceps, tourniquet, compresses, &c. Medical Lexicon. A Dictionary of Medical Science
  15. Squeezing together, condensation, (lit. & fig.). So compressor n. [French] Concise Oxford Dictionary
  16. Act of pressing together; state of being pressed together. American pocket medical dictionary.
  17. The act of compressing or state of being compressed. Appleton's medical dictionary.
  18. n. The act of compressing, or state being compressed. Cabinet Dictionary
  19. The act of bringing the parts of any body more near to each other by violence. Complete Dictionary