glucuronic acidPronunciation: /ˌgluːkjʊˈrɒnɪk/Definition of glucuronic acid noun [mass noun] Biochemistry an acid derived from glucose which occurs naturally as a constituent of hyaluronic acid and other mucopolysaccharides. A uronic acid; chemical formula: HOOC(CHOH)4CHO glucuronic acid in other Oxford dictionaries Definition of glucuronic acid in the US English dictionary