5 letters · 5 points in Scrabble
noun (KNO3) used especially as a fertilizer and explosive
originFrom Middle English niter, nitere, nitre, nytre, from Old French nitre, from Latin nitrum (“native soda, natron”), from Ancient Greek νίτρον (nítron). Ultimately from Egyptian nṯrj (“natron”). Doublet of natron and trona. Compare also natrium, nitrogen.
Etymology from Wiktionary, CC BY-SA 3.0