One entry found for rarefaction.

Main Entry: rar·efac·tion
Pronunciation: rar--fak-shn, rer-
Function: noun
1 : the action or process of rarefying
2 : the state of being rarefied
3 : a state or region of minimum pressure in a substance (as air) being traveled through by a wave formed by compression (as sound)

Pronunciation Symbols