cancellation

Short definition from Wiktionary

Noun

1. 1
   The act, process, or result of cancelling; as, the cancellation of certain words in a contract, or of the contract itself.
2. 2
   The operation of striking out common factors, e.g. in both the dividend and divisor.
3. 3
   A postmark that marks a postage stamp so as to prevent its reuse.
4. 4
   In United States intellectual property law, a proceeding in which an interested party seeks to cancel the registration of a trademark or patent.
5. 5
   The property of being cancellate.