excision

1. The removal of some text during editing. (countable, uncountable)
2. The removal of something (a tumor or body part) by cutting. (countable, uncountable)
3. The removal of a gene from a section of genetic material. (countable, uncountable)
4. 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. (countable, uncountable)

Plural excisions