What is the meaning of Excision?

The removal of some text during editing.

The removal of something (a tumor or body part) by cutting.

The removal of a gene from a section of genetic material.

The fact that, under certain hypotheses, the homology of a space relative to a subspace is unchanged by the identification of a subspace of the latter to a point.

excision

excision; removal by cutting

Source: wiktionary.org