DenizationDenization is an obsolete or defunct process in England and Ireland and the later Kingdom of Great Britain, the United Kingdom, and the British Empire, dating back to the 13th century, by which an alien (foreigner), through letters patent, became a denizen, thereby obtaining certain rights otherwise normally enjoyed only by the King's (or Queen's) subjects, including the right to hold land. The denizen was neither a subject (with citizenship or nationality) nor an alien, but had a status akin to permanent residency today.