The term "Dynastic polity" is the historical notion which refers to Japan's state regime in a transitional period during which it was in the process of transition from the Ritsuryo system (a system of centralized government based on the Ritsuryo code) to the medieval national polity.
王朝国家（おうちょうこっか）は、日本が律令制から中世国家体制へ移行する過渡期の国家体制を表す歴史概念。