Nouns

(n)naturalization, naturalisationthe quality of being brought into conformity with nature
(n)naturalization, naturalisationthe proceeding whereby a foreigner is granted citizenship
(n)naturalization, naturalisationthe introduction of animals or plants to places where they flourish but are not indigenous
(n)naturalization, naturalisationchanging the pronunciation of a borrowed word to agree with the borrowers' phonology“the naturalization in English of many Italian words”