The Collaborative International Dictionary of English v.0.48:

Lithotripsy \Lith"o*trip`sy\ (l[i^]th"[-o]*tr[i^]p`s[y^]), n.
   [Litho- + Gr. tri`bein to rub, grind: cf. F. lithotripsie.]
   (Surg.)
   The operation of crushing a stone in the bladder or urethra
   to reduce it to particles small enough to be voided;
   lithotrity. It may be performed with an instrument called
   lithotriptor or lithotrite (also called a lithoclast); or,
   more recently, may be accomplished by devices using
   ultrasonic waves to fragment the stones.
   [1913 Webster]