In the term pericardiectomy, the word part -ectomy is?

In the term "pericardiectomy," the Word part "-ectomy" refers to the surgical removal of a specific body part. It is derived from the Greek Word "ektome," meaning excision or cutting out. Thus, in this context, pericardiectomy denotes the surgical procedure involving the removal of the pericardium, the membrane surrounding the heart.