7 letters · 11 points in Scrabble
noun a meter that measures the flow of electrical current in amperes
originEtymology tree English ampere 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 ammeter From ampere + -meter.
Etymology from Wiktionary, CC BY-SA 3.0