/ Dictionary / Index L Leo V: Meaning and Definition of Find definitions for: Leo V Pronunciation: [key] fl. 10th century a.d., Italian ecclesiastic: pope 903. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Leo IV Leo VI Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language