硝镪水 xiāoqiāngshuǐ nitric acid Definitions Defs Origin Strokes Stroke Words Sentences Sents 硝 xiāo noun saltpeter General name for mineral salts such as niter or saltpeter; often used to make gunpowder, fertilizer, or medicine镪水 鏹水 qiāngshuǐ strong acid (colloquial) a strong, corrosive acid such as sulfuric, nitric, or hydrochloric acid