/ Dictionary / Index J John XIII: Meaning and Definition of Find definitions for: John XIII Pronunciation: [key] died a.d. 972, Italian ecclesiastic: pope 965–972. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. John XII John XIV Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language