re·vi·sion 
/rɪˈvɪʒən/ noun
plural re·vi·sions /rɪˈvɪʒən/ noun 1 : a change or a set of changes that corrects or improves something [count] ▪ This edition is filled with revisions. ▪ A revision of the theory will be necessary. ▪ They made revisions to the book. [noncount] ▪ The essay needs revision. ▪ The teacher gave me some suggestions for revision. 2 [count] : a new version of something : something (such as a piece of writing or a song) that has been corrected or changed
▪ This is the original version, not the revision. ▪ Here is my revision of the paragraph. 3 [noncount] Brit : study of information that was studied before
▪ Have you done enough revision [=(US) review] for the exam?
▪ This is the original version, not the revision. ▪ Here is my revision of the paragraph.
▪ Have you done enough revision [=(US) review] for the exam?
