11 letters · 16 points in Scrabble
noun an igneous rock consisting of nepheline and pyroxene
originEtymology tree English nepheline Proto-Indo-European *-tósder. Ancient Greek -της (-tēs)der. Ancient Greek -ῑ́της (-ī́tēs)der. Latin -ītēsbor. French -iteder. English -ite English nephelinite From nepheline + -ite.
Etymology from Wiktionary, CC BY-SA 3.0