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rarefaction

   Also found in: Medical, Wikipedia, Hutchinson 0.06 sec.
rar·e·fac·tion  (râr-fkshn)
n.
1. A decrease in density and pressure in a medium, such as air, caused by the passage of a sound wave.
2. The region in which this occurs.
rare·factive adj.
rarefaction  (râr-fkshn)
1. A decrease in density and pressure in a medium, such as air, especially when caused by the passage of a wave, such as a sound wave.
2. The region in which this occurs.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.rarefaction - a decrease in the density of something; "a sound wave causes periodic rarefactions in its medium"
concentration - increase in density


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? Mentioned in ? References in classic literature
 
For some days past, Captain Bonneville had been made sensible of the great elevation of country into which he was gradually ascending by the effect of the dryness and rarefaction of the atmosphere upon his wagons.
The Adventures of Captain Bonneville, U.S.A., in the Rocky Mountains and the far West by Irving, Washington View in context
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