還原作用 huányuánzuòyòng reduction Origin Definitions Defs Strokes Stroke Words Sentences Sents 还原 還原 huányuán verb reduction (chemistry) A process in which a substance gains electrons or loses oxygen atoms.作用 zuòyòng noun function the natural purpose or activity of something, such as a biological or chemical process; often used as a suffix to mean "-ation" or "-ing" as in 消化 xiāohuà plus this word for "digestion"