0 to study a subject again before you take a test -- ripassare
1 to change something so that it is more accurate -- rivedere, correggere, ritoccare
2 to correct faults and make improvements in (a book etc) -- rivedere, revisionare
This dictionary has been completely revised.
3 to study one’s previous work, notes etc in preparation for an examination etc -- ripassare
4 to change (one’s opinion etc). -- rivedere, modificare