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EnglishEdit

EtymologyEdit

Borrowed from Middle French compression, from Latin compressiō.

PronunciationEdit

NounEdit

compression (countable and uncountable, plural compressions)

  1. An increase in density; the act of compressing, or the state of being compressed; compaction.
  2. (automotive) The cycle of an internal combustion engine during which the fuel and air mixture is compressed.
  3. (computing) The process by which data is compressed.
    • 2011, Marcelo A. Montemurro & Damián H. Zanette, “Universal Entropy of Word Ordering Across Linguistic Families”, in PLoS ONE[1], retrieved 2012-09-26:
      Due to the presence of long-range correlations in language [21], [22] it is not possible to compute accurate measures of the entropy by estimating block probabilities directly. More efficient nonparametric methods that work even in the presence of long-range correlations are based on the property that the entropy of a sequence is a lower bound to any lossless compressed version of it [15]. Thus, in principle, it is possible to estimate the entropy of a sequence by finding its length after being compressed by an optimal algorithm. In our analysis, we used an efficient entropy estimator derived from the Lempel-Ziv compression algorithm that converges to the entropy [19], [23], [24], and shows a robust performance when applied to correlated sequences [25] (see Materials and Methods).
  4. (music) The electronic process by which any sound's gain is automatically controlled.
  5. (astronomy) The deviation of a heavenly body from a spherical form.

AntonymsEdit

Derived termsEdit

TranslationsEdit

The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout#Translations.

ReferencesEdit


FrenchEdit

EtymologyEdit

First known attestation 1314, borrowed from Latin compressiō.

NounEdit

compression f (plural compressions)

  1. compression (act, instance of compressing)
  2. compression (cycle of an internal combustion engine)

Further readingEdit


Middle FrenchEdit

EtymologyEdit

Old French, borrowed from Latin compressiō.

NounEdit

compression f (plural compressions)

  1. compression (act, instance of compressing)
    • 1585, Giovanni Marinelli, Thresor des remedes secrets pour les maladies des femmes, page 761
      compression du ventre
      compression of the abdomen

Old FrenchEdit

EtymologyEdit

First known attestation 1314, borrowed from Latin compressiō.

NounEdit

compression f (oblique plural compressions, nominative singular compression, nominative plural compressions)

  1. compression (act, instance of compressing)