Appendectomy Meaning of Appendectomy Surgery to remove the appendix (small finger-shaped pouch at the end of the first part of the large intestine). Also See: Aventyl Azedra Acolbifene hydrochloride Acupuncture-like transcutaneous electrical nerve stimulation Apheresis ATT/RHT Adrenaline ATN-161 Afinitor Disperz ADC