胶原蛋白 jiāoyuándànbái collagen Definitions Defs Origin Strokes Stroke Words Sentences Sents 胶原 膠原 jiāoyuán collagen A type of protein found in skin, bone, and connective tissue, widely used in medicine, cosmetics, and the food industry.蛋白 dànbái noun protein (bound form) protein; albumen; an organic compound made of amino acids found in living cells