Which suffix is used to refer to the act of cutting into?

The suffix used to denote the act of cutting into is "-otomy." This term is derived from the Greek word "tomia," meaning cutting. In medical terminology, it is commonly used in various procedures to indicate surgical incisions or openings created in tissues or organs. For example, "laparotomy" refers to a surgical incision into the abdominal cavity.

The other suffixes reflect different meanings: "-opsy" refers to viewing or examining, often in the context of biopsies where tissue is examined for disease; "-gram" pertains to a record or a written document, commonly used in imaging tests like radiograms or electrocardiograms; and "-ia" denotes a state or condition, used to describe illnesses or abnormal states. Each of these prefixes has specific applications in medical terminology that are distinct from the act of cutting into.