The act, process, or result of cancelling; as, the cancellation of certain words in a contract, or of the contract itself.
In United States intellectual property law, a proceeding in which an interested party seeks to cancel the registration of a trademark or patent.
The operation of striking out common factors, e.g. in both the dividend and divisor.
The property of being cancellate.
A postmark that marks a postage stamp so as to prevent its reuse.
A surgical or medicinal procedure that terminates a pregnancy by removing the fetus; a therapeutic abortion. It is a non-contraceptive form of birth control.