6 letters · 9 points in Scrabble
noun a grey volcanic rock containing plagioclase and quartz and other crystalline minerals
originFrom German Dazit, from Latin Dācia (“greater Romania”). First used in 1863 by Austrian geologists Franz von Hauer and Guido Stache, in a description of the geology of Transylvania.
Etymology from Wiktionary, CC BY-SA 3.0