/ Dictionary / Index F Frederick William: Meaning and Definition of Find definitions for: Fred'erick Wil'liam Pronunciation: [key] (“the Great Elector”) 1620–88, elector of Brandenburg who increased the power and importance of Prussia. 1882–1951, German general: crown prince of Germany 1888–1918 (son of William II of Germany). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Frederick the Great Frederick William I Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language