Final answer:
The surgical procedure suffix that indicates the creation of a new opening is '-ostomy', used for forming an outlet from an internal organ to the body surface.
Step-by-step explanation:
The surgical procedure suffix that signifies the surgical creation of a new opening is -ostomy. This suffix is used in medical terminology to indicate the formation of a permanent or semi-permanent opening from an internal organ to the body's surface for the purpose of allowing the discharge of body fluids or waste. Examples include colostomy (creating an opening from the colon to the surface of the abdomen) and tracheostomy (opening the windpipe to the outside of the neck).