What is the term for a surgical procedure that creates an artificial opening?

The term "ostomy" refers to a surgical procedure that involves creating an opening in the body for the discharge of bodily wastes. This is typically done to divert the flow of feces or urine when the normal route is not available or has been compromised due to disease, injury, or surgery. Common examples include colostomy, ileostomy, and urostomy, each of which involves opening a specific part of the gastrointestinal or urinary tract to the outside of the body.

The other terms listed do not fit the definition of creating an artificial opening. "Plasty" typically refers to surgical repair or reconstruction of a specific area, "otomy" signifies the act of cutting into an organ, and "abrasion" generally refers to scraping or wearing away of the skin or a surface without creating a permanent opening. Thus, "ostomy" is the term uniquely identified with creating an artificial opening.