bn:00066199n
Noun Concept
Categories: Acoustics, Waves, Conservation equations, Sound
EN
rarefaction  rarefactions  Rarefication  rarefied  rarefied air
EN
A decrease in the density of something WordNet 3.0
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EN
A decrease in the density of something WordNet 3.0 & Open English WordNet
Rarefaction is the reduction of an item's density, the opposite of compression. Wikipedia
Reduction of an object's density Wikidata
A reduction in the density of a material, especially that of a fluid. Wiktionary
Reduction in the density of a material. Wiktionary (translation)
EN
A sound wave causes periodic rarefactions in its medium WordNet 3.0 & Open English WordNet
WordNet 3.0 & Open English WordNet
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Wikidata
Wiktionary