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Leo III

noun
  1. Saint, a.d. c750–816, Italian ecclesiastic: pope 795–816.
  2. (“the Isaurian”), a.d. c680–741, Eastern Roman emperor 717–741.
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Leo I

[lee-oh; Italian le-aw]
noun
  1. Saint,Leo the Great, a.d. c390–461, Italian ecclesiastic: pope 440–461.
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Leo II

noun
  1. Saint,died a.d. 683, Sicilian ecclesiastic: pope 682–683.
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Leo IV

noun
  1. Saint,died a.d. 855, Italian ecclesiastic: pope 847–855.
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Leo IX

noun
  1. SaintBruno, 1002–54, German ecclesiastic: pope 1049–54.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for saint leo

Leo I

noun
  1. Saint, known as Leo the Great. ?390–461 ad, pope (440–461). He extended the authority of the papacy in the West and persuaded Attila not to attack Rome (452). Feast day: Nov 10 or Feb 18
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Leo III

noun
  1. called the Isaurian. ?675–741 ad, Byzantine emperor (717–41): he checked Arab expansionism and began the policy of iconoclasm, which divided the empire for the next century
  2. Saint. ?750–816 ad, pope (795–816). He crowned Charlemagne emperor of the Romans (800). Feast day: June 12
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Leo IX

noun
  1. Saint, original name Bruno of Egisheim. 1002–54, pope (1049–54): first of the great medieval reforming popes. Conflict with the Eastern Church led to the schism between Rome and Constantinople (1054). Feast day: April 19
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012