酸性雨 suānxìngyǔ acid rain Origin Definitions Defs Strokes Stroke Words Sentences Sents 酸性 suānxìng noun acidity the chemical property of being acidic; having a sour taste, being able to neutralize bases, and turning blue litmus paper red雨 yǔ noun rain liquid water in the form of droplets that have condensed from atmospheric water vapor and then become heavy enough to fall under gravity