Naturalize (verb)

1. Make someone a citizen of a particular country, typically by means of a legal process.
2. Adapt (someone or something) to a new environment.
3. Explain (something) as being the result of natural causes, rather than supernatural or divine intervention.

Origin:

Early 17th century (in the sense "render natural"): from french naturaliser or late latin naturalizare, from latin naturalis "by nature".

Examples:

1. He was naturalized as a citizen of the country after living there for many years.
2. She naturalized the exotic plant by acclimating it to the local soil and weather conditions.
3. The scientist naturalized the phenomenon, explaining it as a result of natural laws and processes.
4. The government has proposed new measures to make it easier for legal immigrants to naturalize.
5. The new settlers naturalized quickly, adopting the local customs and culture.