Find accurate definitions of over 5,000 Catholic terms and phrases (including abbreviations). Based on Fr. John Hardon's Modern Catholic Dictionary, © Eternal Life. Used with permission.
The belief, contrary to Catholic doctrine, that in the Eucharist the body and blood of Christ coexist with the bread and wine after the Consecration of the Mass. John Wyclif (1324-84) and Martin Luther (1483-1546) professed consubstantiation because they denied transubstantiation.