solenoid
🇺🇸
/ˈsɑːlənɔɪd/
🇬🇧
/ˈsɒlənɔɪd/
A device made of a coil of wire that becomes magnetic when electricity is passed through it.
The solenoid in the door lock activated, allowing us to enter the room.
문의 자석 잠금 장치가 작동하여 우리가 방에 들어갈 수 있었습니다.