/ rɪˈvɪʒn; NAmE / noun
1.
[ C ] a change or set of changes to sth :
He made some minor revisions to the report before printing it out.
2.
[ U , C ] the act of changing sth, or of examining sth with the intention of changing it :
a system in need of revision
a revision of trading standards
3.
[ U ] ( BrE ) the process of learning work for an exam :
Have you started your revision yet?
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WORD ORIGIN
early 17th cent.: from French révision or late Latin revisio(n-) , from the verb revisere look at again, from re- again + visere (intensive form of videre to see).