炼油 Traditional form: 煉油 Pinyin (reading): liànyóu Definitions: oil refinery Characters: 炼 - to smelt, to refine; to distill, to condense 油 - oil, fat, grease, lard; oil paints Traditional characters: 煉 - to smelt, to refine; to distill, to condense 油 - oil, fat, grease, lard; oil paints