noun, noun or participle which takes 'suru', intransitive verb, noun which may take the genitive case particle 'no'
remaining; staying behind; residual
Used for people, objects, substances, or abstract things that stay behind after others have left or been removed. Common in news, technical, and everyday contexts.
会議の後も数人が部屋に残留した。
A few people remained in the room after the meeting.
土
Residual pesticides were detected in the soil.