What Suffix means incision (cutting into tissue)?

The suffix that means incision (cutting into tissue) is -tomy.

Here are some examples:

* Appendectomy: Surgical removal of the appendix.

* Tonsillectomy: Surgical removal of the tonsils.

* Tracheotomy: Surgical incision into the trachea (windpipe).

* Phlebotomy: Incision into a vein to draw blood.

* Craniotomy: Incision into the skull.