When you revise for an examination, you read things again and make notes in order to be prepared for the examination. I have to revise for maths I'd better skip the party and stay at home to revise
{f} make changes in order to improve something; edit, correct; produce an updated or corrected version
{i} act of making changes, alteration; proof sheet made to verify changes made and check for additional errors
If you revise the way you think about something, you adjust your thoughts, usually in order to make them better or more suited to how things are. He soon came to revise his opinion of the profession. = change
If you revise a price, amount, or estimate, you change it to make it more fair, realistic, or accurate. They realised that some of their prices were higher than their competitors' and revised prices accordingly = change
A second proof sheet; a proof sheet taken after the first or a subsequent correction