postdating
verb
Definitions
To occur after an event or time; to exist later on in time
To assign an effective date to a document or action later than the actual date
Example: to postdate a contract, that is, to date it later than the time when it was in fact made
To affix a date to after the event.
noun
Definitions
A later citation of a lexical item.
Example: The new edition of the dictionary contains several postdatings.