You searched for: “precancellation”
precancellation (s) (noun), precancellation (pl)
A stamp that has been marked as paid for prior to it being placed on an envelope or parcel, etc.: As an esoteric dimension of philately, the collection of precancellation is very interesting.
This entry is located in the following units: -ation, -ization (-iz[e] + -ation); -isation (British spelling variation) (page 74) pre-, prae- (page 2)