noun
foreign resident; resident alien
Official or formal term for a foreign national residing in Japan; often used in legal, immigration, and administrative contexts.
在留者は在留カードを常に携帯する必要がある。
Foreign residents are required to carry their residence card at all times.
この地域には多くの在留者が住んでいる。
Many foreign residents live in this area.
General term for 'resident' regardless of nationality; 在留者 specifically implies foreign nationality and legal residence status.
Compound of 在留 (ざいりゅう, 'residing, staying') + 者 (しゃ, 'person'). The term is used in modern legal and administrative Japanese to refer to foreign residents.