The term "ectomy" is a suffix that refers to the surgical removal or excision of a specific organ or tissue. In this case, "excision" is the correct answer as it directly relates to the meaning of "ectomy." Excision is the act of cutting out or removing a part of the body, usually a tumor, cyst, or diseased tissue, through surgical means. Therefore, "excision" aligns perfectly with the concept of "ectomy" as a suffix denoting surgical removal.