denization
/ˌdɛnɪˈzeɪʒən, ˌdɛnɪˈɛʒən/Definitions
1. noun
The act of naturalizing or the state of being naturalized; the process of acquiring citizenship or nationality by a foreign-born person, especially in the British Empire.
“The denization of foreign-born residents allowed them to hold public office in the colonies.”