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A modern dictionary of Catholic terms, both common and obscure. Find accurate definitions of words and phrases.

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TOME OF LEO

A doctrinal letter sent by Pope Leo I in the year 449 to Flavian, Patriarch of Constantinople, on the Church's teaching about the person of Christ. It affirms that Christ has two natures, human and divine, united in the one divine Person of the Son of God. Two years later, at the Council of Chalcedon, this letter was accepted with the declaration, "Peter has spoken through Leo," to define the classical Catholic doctrine on the Incarnation.

All items in this dictionary are from Fr. John Hardon's Modern Catholic Dictionary, © Eternal Life. Used with permission.

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