m 3 a 1 g 2 n 1 e 1 t 1 o 1
7 letters · 10 points in Scrabble
Meaning
noun 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
originClipping of magneto-electric (machine).
Etymology from Wiktionary, CC BY-SA 3.0