Which suffix indicates "to cut"?

The suffix that indicates "to cut" is indeed correctly identified as -tomy. This suffix is derived from the Greek word "tomia," meaning "to cut." It is commonly used in medical terminology to describe surgical procedures involving incisions or cutting into an organ or tissue.

For instance, in the term "nephrotomy," which refers to the surgical incision into a kidney, the suffix -tomy indicates that a cut is being made. This is significant in distinguishing it from other suffixes, such as -ectomy, which refers to the removal of a part (excision), and -plasty, which indicates surgical repair. Understanding -tomy can help one recognize various surgical procedures in healthcare contexts.