原因论 yuányīnlùn etiology Origin Definitions Defs Strokes Stroke Words Sentences Sents 原因 yuányīn noun cause a reason, origin, or circumstance that leads to a result; whys and wherefores; (philosophy) a phenomenon or thing that produces another phenomenon or thing, as distinguished from the effect (结果 jiéguǒ)论 論 lùn noun theory theory; doctrine; view; opinion