the action of canceling something that has been arranged or planned:train services are subject to cancellation at short noticethe project was threatened with cancellation by the governmentthe cancellation of the performance
a crossing out of something written:all cancellations on documents must be made indelibly
a visible or electronic mark placed on a postage stamp to show that it has been used.
Law the annulling of a legal document:the debtor can procure cancellation if satisfied within one month