ETYM Latin cancellatio: cf. French cancellation.
1. The act of cancelling; calling off some arrangement.
2. The act of revoking or annulling or making void.

ETYM Latin deletio, from delere. Related to Delete.
1. The act of deleting something written or printed.
2. The part that is omitted when an editorial change shortens a written passage; SYN. cut.