This is the 4077th most frequent Korean word.
자동
"Automatic."
Used to mean 'automatic' as a descriptive term for the functioning of a door.
이 문은 자동으로 열립니다.
This door opens automatically.
Used to describe a system designed to perform automated tasks.
자동 응답 시스템이 있습니다.
There is an automated response system.
Refers to an 'automatic' mode or setting, here in a vehicular context.