lith·o·trip·sy 
(lĭthə-trĭp′sē)
(lĭthə-trĭp′sē)n. pl. lith·o·trip·sies
Pulverization of kidney stones or gallstones by means of a lithotripter.
[LITHO- + Greek trīpsis, a rubbing, pounding (from trībein, to rub, pound; see LITHOTRIPTER) + -Y2.]