10 letters · 22 points in Scrabble
originEtymology tree English pyroxene Proto-Indo-European *-tósder. Ancient Greek -της (-tēs)der. Ancient Greek -ῑ́της (-ī́tēs)der. Latin -ītēsbor. French -iteder. English -ite English pyroxenite From pyroxene + -ite.
Etymology from Wiktionary, CC BY-SA 3.0