naturalization

Cultural  

1. The process by which a foreign citizen becomes a citizen of a new country. Millions of immigrants to the United States have become American citizens. Requirements for naturalization in the United States include residency for several years, ability to communicate in English, demonstrated knowledge of American history and government, and a dedication to American values that includes no membership in subversive organizations, such as the Communist party.

---

Explanation

Use the noun naturalization to describe what happens when someone becomes a brand new citizen of a country. If you're born in one country but want to become a citizen of another, you'll have to go through the process of naturalization. There are certain rules and processes involved in naturalization, depending on the country, but you usually have to live there for a certain number of years and swear an oath of loyalty. When biologists use the word naturalization, they're talking about moving plants or animals to a new place where they can thrive.

Example Sentences

The form for the second person on the list bore the initials of a member of her staff, who’d helped the man register — at his naturalization ceremony.

From Salon • Feb. 27, 2026

Prosecutors said Puig lied on an application as part of his US naturalization process in 2019 when he denied ever gambling illegally.

From Barron's • Feb. 6, 2026

Years of navigating paperwork, approvals, tests, and security vetting, had brought her to the last step: a naturalization ceremony.

From BBC • Dec. 14, 2025

The U.S. asks applicants for naturalization to affirm an understanding of Americanness that goes beyond the formal and legal.

From The Wall Street Journal • Oct. 28, 2025

After the ceremony ended, we were directed to wait in a line that corresponded with our last name to turn over our green card and to receive a certificate of naturalization.

From "Americanized" by Sara Saedi