19 letters · 27 points in Scrabble
originEtymology tree French électro-bor. Ancient Greek ἤλεκτρον (ḗlektron)bor. Latin ēlectrum Latin electro-bor. English electro- Latin lumen Proto-Indo-European *-éh₁ti Proto-Indo-European *-sḱéti Proto-Indo-European *-éh₁sḱeti Proto-Italic *-ēskō Latin -ēscō Latin -escensder. English -escence English luminescence English electroluminescence From electro- + luminescence.
Etymology from Wiktionary, CC BY-SA 3.0