1. A cut into a body tissue or organ; especially, one that is made during surgery: Most incisions are done in order to gain access to a diseased organ so it can be repaired or removed.

Sometimes an incision is made to relieve pressure; such as, from pus that has been formed as a result of an infection in the tissue cells.

2. The fact or quality of being quick to understand or able to express something clearly: Paul was known in school for his incisions, as determined by his precise responses to his teachers’ questions.