Which surgical term indicates a procedure that involves cutting into an organ or tissue?

The term that indicates a procedure involving cutting into an organ or tissue is "otomy." This surgical suffix is derived from the Greek word "otomē," meaning "to cut." In a clinical context, an "otomy" is used to describe a variety of surgical interventions where an incision is made to access internal structures, allowing for examination or treatment.

For instance, a "tracheotomy" refers to an incision into the trachea, and a "laparotomy" indicates an incision into the abdominal cavity. This terminology is fundamental in the medical field as it succinctly conveys the nature of the surgical procedure being performed.

Other terms listed, such as "ostomy," refer to creating an opening (stoma) in an organ or tissue, "plasty" implies surgical repair or reconstruction of a tissue or organ, and "angiography" is a diagnostic imaging technique used to visualize the inside of blood vessels. These terms denote different types of procedures and do not specifically reference the action of cutting into organ or tissue, emphasizing why "otomy" is the most accurate choice in this context.