Alternator (noun)

A device in a car or other internal combustion engine that converts mechanical energy into electrical energy to charge the battery and power the electrical system.

Origin:

Late 19th century, from latin alternare (to alternate) + -tor.

Examples:

1. The alternator is responsible for charging the car's battery while the engine is running.
2. The mechanic said the alternator was the cause of the electrical problems in the car.
3. The alternator's function is to generate electrical energy to charge the battery and to power the electrical system.
4. An alternator is a type of generator that converts mechanical energy into electrical energy.
5. It"s time to replace the alternator, it"s not working properly.