Cancellation

Full definition of cancellation

(plural cancellations)

The act, process, or result of cancelling; as, the cancellation of certain words in a contract, or of the contract itself.
(mathematics) The operation of striking out common factors, in both the dividend and divisor.
(philately) A postmark that marks a postage stamp so as to prevent its reuse.
(legal) In United States intellectual property law, a proceeding in which an interested party seeks to cancel the registration of a trademark or patent.