Cancellation \Can`cel*la"tion\, n. [L. cancellatio: cf. F. cancellation.]

1. The act, process, or result of canceling; as, the cansellation of certain words in a contract, or of the contract itself.

2. (Math.) The operation of striking out common factors, in both the dividend and divisor.

Source: Webster's Revised Unabridged Dictionary (1913)