rarefaction

(redirected from rarefactive)
Also found in: Dictionary, Thesaurus, Medical.

rarefaction

[¦rer·ə¦fak·shən]
(acoustics)
The instantaneous, local reduction in density of a gas resulting from passage of a sound wave, or the region in which the density is reduced at some instant. Also known as rarefraction.
References in periodicals archive ?
The variation of the coefficients of nonlinear terms with different plasma parameters (the travelling wave velocity v, nonextensive parameter q, positive dust temperatures ratio [[sigma].sub.p], and negative dust temperatures ratio [[sigma].sub.n]) shows the existence of two types of solitons (compressive and rarefactive).
In Section 3 we will consider the exponential law and investigate rarefactive solitary wave solutions of (1) with K([phi]) given by (34).
We now derive a rarefactive solitary wave solution, with [phi] [greater than or equal to] 1, of the partial differential equation (46).
In order to obtain the there arbitrary constants, A, B, and c, w impose there boundary conditions suitable for a rarefactive solitary wave.