can ‧ cel ‧ la ‧ tion /ˌkænsəˈleɪʃ ə n/ BrE AmE noun [uncountable and countable]
1 . a decision that an event that was planned will not happen:
Rail passengers are fed up with cancellations and delays.
Bad weather led to the cancellation of the game.
2 . a decision to end an agreement or arrangement that you have with someone:
There is a cancellation fee of £20.
The hotel is fully booked, but we will let you know if there are any cancellations.