/ Dictionary / Index F Frederick II: Meaning and Definition of Find definitions for: Frederick II Pronunciation: [key] See(def. 2). (“Frederick the Great”) 1712–86, king of Prussia 1740–86 (son of Frederick William I). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Frederick I Frederick III Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language