辛烷值 Traditional form: 辛烷值 Pinyin (reading): xīnwánzhí Definitions: octane rating Characters: 辛 - bitter; toilsome, laborious; 8th heavenly stem 烷 - alkane 值 - price, value, worth Traditional characters: 辛 - bitter; toilsome, laborious; 8th heavenly stem 烷 - alkane 值 - price, value, worth