(n.) The act or practice of opening cysts; esp., the operation of cutting into the bladder, as for the extraction of a calculus.

amygdalotomy ankylotomy arteriotomy blepharotomy caesarean cardiotomy celiotomy cholecystotomy cirsotomy coccygotomy colpotomy craniotomy cystotomy embryotomy enterotomy gastroenterotomy gastrotomy glossotomy hebotomy herniotomy hysterotomy laparotomy lithotomy mastotomy nephrotomy neurotomy ovariotomy pancreatotomy phrenicotomy pneumonotomy prefrontal lobotomy prostatotomy psychosurgery salpingotomy sclerotomy thoracotomy thyrotomy tonsillotomy ureterotomy urethrotomy