/ Dictionary / Index J John XXI: Meaning and Definition of Find definitions for: John XXI Pronunciation: [key] (Petrus Hispanus) died 1277, Portuguese ecclesiastic: pope 1276–77. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. John XIX John XXII Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language