8 letters · 11 points in Scrabble
noun resistor for regulating current
originEtymology tree Proto-Indo-European *ser-? Proto-Indo-European *srew- Proto-Indo-European *sréweti Proto-Hellenic *hréwō Ancient Greek ῥέω (rhéō) English rheo- English -stat English rheostat From rheo- + -stat.
Etymology from Wiktionary, CC BY-SA 3.0