/ Dictionary / Index L Lateran: Meaning and Definition of Find definitions for: Lat•er•an Pronunciation: (lat'ur-un), [key] — n. the church of St. John Lateran, the cathedral church of the city of Rome; the church of the pope as bishop of Rome. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lateran (Thesaurus) lateral system Lateran Council Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language