阿伏加德罗定律 āfújiādéluódìnglǜ Avogadro's law Origin Definitions Defs Strokes Stroke Words Sentences Sents 阿 ā phonetic 伏 fú phonetic 加 jiā phonetic 德 dé phonetic 罗 luó phonetic 定律 dìnglǜ noun scientific law A scientific law or established rule; a statement describing phenomena that has been proven through observation or experiment.