9 letters · 14 points in Scrabble
noun meter that measures the potential difference between two points
originEtymology tree English volt 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 voltmeter From volt + -meter.
Etymology from Wiktionary, CC BY-SA 3.0