光化作用 guānghuàzuòyòng photochemical reaction Definitions Defs Origin Strokes Stroke Words Sentences Sents 光化 guānghuà photochemical pertaining to chemical changes caused by light; actinic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"
