/ rɪˈvaɪz; NAmE / verb
1.
[ vn ] to change your opinions or plans, for example because of sth you have learned :
I can see I will have to revise my opinions of his abilities now.
The government may need to revise its policy in the light of this report.
2.
[ vn ] to change sth, such as a book or an estimate, in order to correct or improve it :
a revised edition of a textbook
I'll prepare a revised estimate for you.
We may have to revise this figure upwards.
3.
( BrE ) to prepare for an exam by looking again at work that you have done :
[ v ]
I spent the weekend revising for my exam.
I can't come out tonight. I have to revise.
[ vn ]
I'm revising Geography today.
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WORD ORIGIN
mid 16th cent. (in the sense look again or repeatedly (at) ): from French réviser look at, or Latin revisere look at again, from re- again + visere (intensive form of videre to see).