rarefaction (redirected from rarefactions)

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.

Thesaurus

Noun

1.

rarefaction - a decrease in the density of something; "a sound wave causes periodic rarefactions in its medium" concentration - increase in density