Definition of "naturalize" verb third-person singular simple present naturalizes , present participle naturalizing , simple past and past participle naturalized
To grant citizenship to someone not born a citizen . quotations examples
Quotations Pakche was destroyed and five years later , Kokuryo was also swept away by T ’ang and Silla . T ’ang set up An -tontu -hu -fu (Government headquarters ) at P ’ing jang to rule the former territories of Pakche and Kokuryo . Many refugees from these destroyed states came to Japan and became naturalized as Japanese .
1964, Japanese National Commission for UNESCO, “History”, in Japan: Its Land, People and Culture, Revised edition, Printing Bureau, Ministry of Finance, page 20, column 2