7 letters · 16 points in Scrabble
noun any of a family of glassy minerals analogous to feldspar containing hydrated aluminum silicates of calcium or sodium or potassium; formed in cavities in lava flows and in plutonic rocks
originFrom Swedish zeolit, and its source, New Latin zeolites, from Ancient Greek ζέω (zéō, “to boil, bubble”) + -lite.
Etymology from Wiktionary, CC BY-SA 3.0