ウロカニン酸さんMeanings1nounurocanic acidchemistryA chemical compound found in the skin; technical term used in biochemistry and dermatology.ウロカニン酸さんは紫し外がい線せんを吸きゅう収しゅうする物ぶっ質しつとして知しられている。Urocanic acid is known as a substance that absorbs ultraviolet light.