naturalization

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun the quality of being brought into conformity with nature
noun the proceeding whereby a foreigner is granted citizenship
noun the introduction of animals or plants to places where they flourish but are not indigenous

From Middle French naturalisation.

Here you have the INS, the Immigration and Naturalization Service. — Life Blood, Thomas Hoover
[A15-215] Operation Instructions of the Immigration and Naturalization Service 205.3. — Report of the President's Commission on the Assassination of President John F. Kennedy, United States. Warren Commission
Require a residence of twenty-one years in this country before naturalization. — A School History of the United States, John Bach McMaster

naturalisation

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