硝酸钾 Traditional form: 硝酸鉀 Pinyin (reading): xiāosuānjiǎ Definitions: potassium nitrate Characters: 硝 - saltpeter; to tan leather 酸 - tart, sour; spoiled; acid 钾 - potassium Traditional characters: 硝 - saltpeter; to tan leather 酸 - tart, sour; spoiled; acid 鉀 - potassium