Which term is associated with a surgical procedure involving the removal of an organ or tissue?

The term that signifies a surgical procedure involving the removal of an organ or tissue is “-ectomy.” This suffix comes from the Greek word "ektomē," meaning "to cut out." It is commonly used in medical terminology to denote the removal of specific structures from the body. For example, an "appendectomy" refers to the surgical removal of the appendix, while a "mastectomy" indicates the removal of breast tissue.

Understanding this term is crucial in veterinary science, as it helps in accurately describing surgical procedures performed on animals. The other terms listed do not denote the act of removal; for instance, "incision" refers to a cut made into tissue or organs, “pathy” relates to disease, and “osteo” pertains to bone, but none imply removal. Thus, “-ectomy” is definitively associated with the process of excision in surgical practices.