rarefaction
UK: ˌrɛərɪˈfækʃən | US: ˌrɛrɪˈfækʃən
n. the process of becoming less dense or solid; a reduction in density or pressure
n. (physics) the expansion of a gas or reduction in its density
The word "rarefaction" originates from Late Latin rarefactio, combining rarus (sparse) and facere (to make). It describes the process of making something less dense, particularly in scientific contexts like physics, where it refers to gas expansion or pressure reduction. The term retains its logical structure, linking "rarity" with "action."
The rarefaction of air at high altitudes makes breathing difficult.
Sound waves consist of alternating compression and rarefaction of air molecules.
The experiment demonstrated the rarefaction of gases under reduced pressure.
In geology, rarefaction can describe the thinning of rock layers.
The artist used rarefaction of brushstrokes to create a sense of lightness.