Main Entry: cav·i·ta·tion

Pronunciation: \ˌka-və-ˈtā-shən\

Function: noun

Etymology: cavity + -ation

Date: 1895

: the process of cavitating: as a : the formation of partial vacuums in a liquid by a swiftly moving solid body (as a propeller) or by high-intensity sound waves; also : the pitting and wearing away of solid surfaces (as of metal or concrete) as a result of the collapse of these vacuums in surrounding liquid b : the formation of cavities in an organ or tissue especially in disease