different between compaction vs compression
compaction
English
Etymology
From Old French compaction, from Latin compactionem, from compingere.
Noun
compaction (countable and uncountable, plural compactions)
- The process of compacting something, or something that has been compacted.
- 2009, Hilary Mantel, Wolf Hall, Fourth Estate 2010, p. 480:
- At Smithfield Frith is being shovelled up, his youth, his grace, his learning and his beauty: a compaction of mud, grease, charred bone.
- 2009, Hilary Mantel, Wolf Hall, Fourth Estate 2010, p. 480:
Translations
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compression
English
Etymology
Borrowed from Middle French compression, from Latin compressi?.
Pronunciation
- IPA(key): /k?m.p???.?n/
- Rhymes: -???n
Noun
compression (countable and uncountable, plural compressions)
- An increase in density; the act of compressing, or the state of being compressed; compaction.
- (automotive) The cycle of an internal combustion engine during which the fuel and air mixture is compressed.
- (computing) The process by which data is compressed.
- 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).
- (music) The electronic process by which any sound's gain is automatically controlled.
- (astronomy) The deviation of a heavenly body from a spherical form.
Antonyms
- decompression
- rarefaction
Derived terms
- compression ratio
- compression wave
- data compression
Translations
References
- Compression in the Encyclopædia Britannica (11th edition, 1911)
French
Etymology
First known attestation 1314, borrowed from Latin compressi?.
Pronunciation
Noun
compression f (plural compressions)
- compression (act, instance of compressing)
- compression (cycle of an internal combustion engine)
Further reading
- “compression” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).
Middle French
Etymology
Old French, borrowed from Latin compressi?.
Noun
compression f (plural compressions)
- 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
- compression du ventre
- 1585, Giovanni Marinelli, Thresor des remedes secrets pour les maladies des femmes, page 761
Old French
Etymology
First known attestation 1314, borrowed from Latin compressi?.
Noun
compression f (oblique plural compressions, nominative singular compression, nominative plural compressions)
- compression (act, instance of compressing)
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