The property of being cancellate.
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.
A postmark that marks a postage stamp so as to prevent its reuse.
The act of nullifying; a rendering void and of no effect, or no legal effect.
The nullification crisis in U.S. history, confrontation between the state of South Carolina and the federal government in 1832–33 over the former's attempt to declare null and void within the state the federal Tariffs of 1828 and 1832.
Surgical removal of genitals (and sometimes nipples) as a form of body modification; a person who has undergone this surgery is a nullo.