What does 'Transubstantiation' mean in Catholic theology?

Transubstantiation is a central concept in Catholic theology that refers specifically to the change that occurs during the celebration of the Eucharist. In this belief, the bread and wine offered in the Mass are transformed into the actual body and blood of Jesus Christ. This transformation is understood to happen at the moment of consecration, when the priest invokes the Holy Spirit. Catholic teaching emphasizes that, even though the appearances of bread and wine remain – including taste, smell, and texture – their essence is said to be completely changed.

This understanding of the Eucharist is rooted in the teachings of Scripture and the tradition of the Church. It highlights the Catholic view of the real presence of Christ in the Eucharist, distinguishing it from mere symbolism or representation. Thus, the belief in transubstantiation is fundamental to the practice of the Eucharist in the Catholic faith, making it a profound expression of devotion and belief in the mystery of Christ's presence among the faithful.