/ Dictionary / Index S Sylvester II: Meaning and Definition of Find definitions for: Sylvester II Pronunciation: [key] (Gerbert) died 1003, French ecclesiastic: pope 999–1003. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Sylvester I Sylvia Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language