(1712–86), king of Prussia 1740–86; known as Frederick the Great. His campaigns in the War of the Austrian Succession (1740–8) and the Seven Years War (1756–63) succeeded in considerably strengthening Prussia's position; by the end of his reign he had doubled the area of his country.
Definition of Frederick II in US English:
Frederick II
proper noun
(1712–86), king of Prussia 1740–86; known as Frederick the Great. His campaigns in the War of the Austrian Succession 1740–48 and the Seven Years War 1756–63 succeeded in considerably strengthening Prussia's position; by the end of his reign he had doubled the area of his country.