Source : WordNet®

naturalisation
     n 1: the quality of being brought into conformity with nature
          [syn: {naturalization}]
     2: the proceeding whereby a foreigner is granted citizenship
        [syn: {naturalization}]
     3: the introduction of animals or plants to places where they
        flourish but are not indigenous [syn: {naturalization}]
     4: changing the pronunciation of a borrowed word to agree with
        the borrowers' phonology; "the naturalization in English
        of many Italian words" [syn: {naturalization}]