noun
magnetic mine
A naval mine that detonates in response to the magnetic field of a ship. Technical term used in military and maritime contexts.
磁気機雷は、船の磁気に反応して爆発する。
Magnetic mines explode in response to a ship's magnetic field.
機雷 is the general term for naval mines; 磁気機雷 specifies the magnetic type.
Compound of 磁気 (magnetism) and 機雷 (naval mine).