To settle down or take up permanent residence in a place; to live in one location on a long-term or permanent basis.
戦後、多くの人々が地方に定住した。
After the war, many people settled permanently in rural areas.
移民として定住するにはビザの条件を満たす必要がある。
To settle as an immigrant, you must meet the visa requirements.
彼は都会の喧騒を嫌って田舎に定住した。
He disliked the city's noise and settled down in the countryside.