6 letters · 6 points in Scrabble
originFrom French natron, from Spanish natrón, from Arabic نَطْرُون (naṭrūn), from Ancient Greek νίτρον (nítron, “nitre”), ultimately from Egyptian nṯrj (“natron”): R9 Doublet of niter and trona.
Etymology from Wiktionary, CC BY-SA 3.0