12 letters · 17 points in Scrabble
noun (chemistry) a chemical decomposition reaction produced by passing an electric current through a solution containing ions
noun removing superfluous or unwanted hair by passing an electric current through the hair root
originCoined by English polymath William Whewell in 1834 for Michael Faraday. From electro- + -lysis (“a loosening”). Originally of tumors, later (1909) of hair removal.
Etymology from Wiktionary, CC BY-SA 3.0