to revise / a revision
‘Revise’ has two meanings, both of which are useful for academic writing. For students, “revise” means to study again – so this is something you normally do before exams.
The other meaning of ‘revise’ is to make changes to a document, plan, forecast etc, so that it’s more exact or better than the original version. It’s a very common word in management and academic writing.
We had to revise our original estimates to take account of the rising costs of oil.