%cystotomy%

n. [ Gr. &unr_;&unr_;&unr_;&unr_; bladder + &unr_;&unr_;&unr_;&unr_; to cut: cf. F. cystotomie. ] The act or practice of opening cysts; esp., the operation of cutting into the bladder, as for the extraction of a calculus. [ 1913 Webster ]