Final answer:
The correct term for an incision to remove a stone is lithotomy, a combination of the Greek words for stone and cutting.
Step-by-step explanation:
The word that means an incision (or cutting into) to remove a stone is lithotomy. This term is derived from the Greek words 'lithos' meaning stone, and 'tomy' meaning cutting. Options b (lithography) and e (lithography) refer to a printmaking process, while c (lithectomy) refers to the removal of a stone, but not necessarily through cutting into tissue. Option d (lithostomy) is not a commonly used term in medical nomenclature for the removal of a stone. Therefore, the correct answer is a. lithotomy.