[mag.is.te.ri.al] adj [LL magisterialis of authority, fr. magisterium office of a master, fr. magister] (1632) 1 a (1): of, relating to, or having the characteristics of a master or teacher: authoritative (2): marked by an overbearingly dignified or assured manner or aspect b: of, relating to, or required for a master's degree
2: of or relating to a magistrate or a magistrate's office or duties syn see dictatorial -- mag.is.te.ri.al.ly adv