Mattĭăcus | Mattĭăci, ōrum (noun M) :
* Adj., of or belonging to Mattiacum (the mod. Wiesbaden): Mattiaci fontes,the warm mineral springs of Wiesbaden,Plin. 31, 2, 17, § 20: aquae,Amm. 29, 4, 3: pilae,soap-balls for coloring the hair,Mart. 14, 27: ager,Tac. A. 11, 20. —In plur. subst.: , , m., the inhabitants of Mattiacum, Tac. G. 29; id. H. 4, 37.