Meaning of “naturalize” in the English Dictionary

"naturalize" in British English

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naturalizeverb [ T ]

UK usually naturalise uk /ˈnætʃ.ər.əl.aɪz/ us /ˈnætʃ.ɚ.rə.laɪz/
naturalization
noun [ U ] UK usually naturalisation uk /ˌnætʃ.ər.əl.aɪˈzeɪ.ʃən/ us /ˌnætʃ.ɚ.rə.ləˈzeɪ.ʃən/

(Definition of “naturalize” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"naturalize" in American English

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naturalizeverb [ T ]

us /ˈnætʃ·ər·əˌlɑɪz/

to make someone a legal citizen of a country that the person was not born in

naturalization
noun [ U ] us /ˌnætʃ·ər·ə·ləˈzeɪ·ʃən/

She’s applied for naturalization.

(Definition of “naturalize” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"naturalize" in Business English

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naturalizeverb [ I or T ]

UK also naturalise uk /ˈnætʃərəlaɪz/ us LAW

to make someone a citizen of a country they were not born in, or to become a citizen of a country you were not born in:

be/become naturalized About 700,000 immigrants were naturalized as citizens last year, officials said.
Not all permanent residents are eligible to naturalize.
a naturalized citizen

(Definition of “naturalize” from the Cambridge Business English Dictionary © Cambridge University Press)