硝酸钠 Traditional form: 硝酸鈉 Pinyin (reading): xiāosuānnà Definitions: sodium nitrate Characters: 硝 - saltpeter; to tan leather 酸 - tart, sour; spoiled; acid 钠 - sodium, natrium; to sharpen wood Traditional characters: 硝 - saltpeter; to tan leather 酸 - tart, sour; spoiled; acid 鈉 - sodium, natrium; to sharpen wood