硝石 xiāoshí niter Origin Definitions Defs Strokes Stroke Words Sentences Sents 智利硝石 zhìlìxiāoshí sodium nitrate sodium nitrate; a mineral found in Chile used to make nitric acid and fertilizer钾硝石 jiǎxiāoshí saltpeter potassium nitrate, used in the manufacture of gunpowder and fertilizer