18 letters · 28 points in Scrabble
noun measuring instrument that uses the interaction of the magnetic fields of two coils to measure current or voltage or power
originEtymology tree French électro-bor. Latin ēlectrum Latin electro-bor. English electro- English dynamometer English electrodynamometer From electro- + dynamometer.
Etymology from Wiktionary, CC BY-SA 3.0