9 letters · 10 points in Scrabble
noun any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their
originApparently from obsolete Dutch huisenblas, from German Hausenblase, from Hausen (“sturgeon of the Huso genus”) + Blase (“bladder”), with alteration after glass.
Etymology from Wiktionary, CC BY-SA 3.0