noun
acquisition of nationality; naturalization
Formal term used in legal and administrative contexts. Refers to the process of obtaining citizenship of a country, often by application.
日本で国籍取得を申請するには、いくつかの条件を満たす必要がある。
To apply for naturalization in Japan, you must meet several requirements.
彼は長年の努力の末、ついに国籍取得に成功した。
After years of effort, he finally succeeded in acquiring citizenship.