Noun | 1. | ostomy - surgical procedure that creates an artificial opening for the elimination of bodily wastes colostomy - a surgical operation that creates an opening from the colon to the surface of the body to function as an anus surgical operation, surgical procedure, surgical process, surgery, operation - a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body; "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery" ileostomy - surgical procedure that creates an opening from the ileum through the abdominal wall to function as an anus; performed in cases of cancer of the colon or ulcerative colitis |