硝酸铵 Traditional form: 硝酸銨 Pinyin (reading): xiāosuān'ǎn Definitions: ammonium nitrate Characters: 硝 - saltpeter; to tan leather 酸 - tart, sour; spoiled; acid 铵 - ammonium Traditional characters: 硝 - saltpeter; to tan leather 酸 - tart, sour; spoiled; acid 銨 - ammonium