重油 Traditional form: 重油 Pinyin (reading): zhòngyóu Definitions: (petrochemistry) heavy oil fuel oil Characters: 重 - heavy, weighty; to double, to repeat 油 - oil, fat, grease, lard; oil paints Traditional characters: 重 - heavy, weighty; to double, to repeat 油 - oil, fat, grease, lard; oil paints