/ ˌkænsəˈleɪʃn; NAmE / ( NAmE also can·cel·ation ) noun
1.
[ U , C ] a decision to stop sth that has already been arranged from happening; a statement that sth will not happen :
We need at least 24 hours' notice of cancellation.
a cancellation fee
Heavy seas can cause cancellation of ferry services.
Cancellations must be made in writing.
2.
[ C ] something that has been cancelled :
Are there any cancellations for this evening's performance? (= tickets that have been returned)
3.
[ U ] the fact of making sth no longer valid :
the cancellation of the contract
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WORD ORIGIN
mid 16th cent.: from Latin cancellatio(n-) , from the verb cancellare , from cancelli crossbars.