9 letters · 14 points in Scrabble
noun an instrument for measuring in watts the flow of power in an electrical circuit
originEtymology tree English watt Proto-Indo-European *meh₁- Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Hellenic *-tron Ancient Greek -τρον (-tron) Ancient Greek μέτρον (métron)der. English -meter English wattmeter From watt + -meter.
Etymology from Wiktionary, CC BY-SA 3.0