Of or pertaining to a master or magistrate, or one in authority; having the manner of a magister; official; commanding; authoritative. Hence: Overbearing; dictatorial; dogmatic. "When magisterial duties from his home Her father called." "We are not magisterial in opinions, nor, dictator-like, obtrude our notions on any man." "Pretenses go a great way with men that take fair words and magisterial looks for current payment."