14 letters · 18 points in Scrabble
originEtymology tree Proto-Indo-European *ster-der. Ancient Greek στερεός (stereós) Ancient Greek στερεο- (stereo-)der. English stereo- English isomer Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English isomeric English stereoisomeric From stereo- + isomeric.
Etymology from Wiktionary, CC BY-SA 3.0