Electromagnet (noun)

1. A type of magnet that uses an electric current to create a magnetic field.
2. An electric circuit that consists of a coil of wire and a core of magnetic material.

Origin:

Formed from the combination of "electro" and "magnet".

Examples:

1. An electromagnet is used in electric motors and generators.
2. The electromagnet in a telephone receiver converts variations in electric current into sound.
3. The electromagnet in a crane is used to lift heavy loads.
4. The electromagnet in a train or a subway is used to propel the vehicle by interaction with the rail tracks.
5. An electromagnet is a temporary magnet that can be turned on and off by adjusting the flow of electricity.