甲壳素 Traditional 甲殼素 jiǎ qiào sù 🔊 chitin + Review this word Meanings jiǎ qiào sù 甲殼素 chitin Its characters 甲jiǎfirst of the ten Heavenly Stems 十天干[shi2…HSK 5壳késhell (of an egg, nut, crab etc)HSK 7–9素sùraw silkHSK 7–9