magneto
- n a small dynamo with a secondary winding that produces a high voltage enabling a spark to jump between the poles of a spark plug in a gasoline engine
- Because Professor Allison's magneto-optical apparatus is his own contrivance, many a scientist doubted his discoveries.
- The rays operate by disabling the magneto of an engine.
- Turn-of-the-century automobile owners considered a magneto-less automobile useless.