compression

compression

English

Etymology

Borrowed from Middle French compression, from Latin compressiō.

Pronunciation

• IPA^(key): /kɒm.pɹɛʃ.ən/

• Audio (southern England)

  (file)

• Rhymes: -ɛʃən

Noun

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, 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.

Antonyms

• decompression
• rarefaction

Derived terms

• age compression
• compression fracture
• compression pump
• compression ratio
• compression release
• compression set
• compression shorts
• compression sock
• compression wave
• compression wood
• data compression
• effective compression
• globe of compression
• selective compression
• time-space compression

 

Translations

the act of compressing

Bulgarian: свиване (bg) n (svivane), сгъстяване (bg) n (sgǎstjavane) Catalan: compressió (ca) f Czech: stlačení n, komprese f Danish: kompression c, komprimering c, sammenpresning c Dutch: compressie (nl) f, comprimering Finnish: puristaminen (fi) Georgian: კუმშვა (ḳumšva), შეკუმშვა (šeḳumšva) German: Kompression (de) f, Komprimierung f Indonesian: kompresi (id) Italian: compressione (it) f Polish: kompresja (pl) f Portuguese: compressão (pt) f, compactação f Russian: сжа́тие (ru) n (sžátije) Tagalog: tipil Turkish: sıkıştırma (tr), deriştirme

the cycle of an internal combustion engine during which the fuel and air mixture is compressed

Bulgarian: компресия (bg) f (kompresija) Catalan: compressió (ca) f Danish: kompression c Dutch: compressie (nl) f Finnish: puristus (fi) German: Kompression (de) Italian: compressione (it) f Polish: sprężenie n, kompresja (pl) f Portuguese: compressão (pt) f Russian: сжа́тие (ru) n (sžátije) Tagalog: tipil Turkish: kompresyon

(computing) the process by which data is compressed

Bulgarian: компресиране n (kompresirane) Dutch: comprimering Georgian: შეკუმშვა (šeḳumšva) German: Komprimierung f Greek: συμπίεση (el) f (sympíesi) Icelandic: þjöppun f Italian: compressione (it) f Polish: kompresja (pl) f Portuguese: compressão (pt) f, compactação f Russian: сжа́тие (ru) n (sžátije) Swedish: komprimering (sv) c, kompression (sv) c Turkish: sıkıştırma (tr)

(music) the electronic process by which any sound's gain is automatically controlled

Bulgarian: компреси́ране n (kompresírane) Dutch: compressie (nl) f Portuguese: compressão (pt) f

The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.

Translations to be checked

Dutch: comprimering French: (please verify) compression (fr), (please verify) réduction (fr), (please verify) concision (fr) Spanish: (please verify) compresión (es) f

References

• Compression in the Encyclopædia Britannica (11th edition, 1911)

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French

Etymology

First known attestation 1314, borrowed from Latin compressiō.

Pronunciation

• Audio

  (file)

Noun

compression f (plural compressions)

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

Further reading

• “compression”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

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Middle French

Etymology

Old French, borrowed from Latin compressiō.

Noun

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

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Old French

Etymology

First known attestation 1314, borrowed from Latin compressiō.

Noun

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

1. compression (act, instance of compressing)