- the act of transubstantiating; change of one substance into another
- R.C.Ch., Eastern Orthodox Ch.
- the doctrine that, in the Eucharist, the whole substances of the bread and of the wine are changed into the body and blood of Christ, only the accidents of bread and wine remaining
- this change
Origin of transubstantiationEcclesiastical Medieval Latin transubstantiatio
- Conversion of one substance into another.
- In many Christian churches, the doctrine holding that the bread and wine of the Eucharist are transformed into the body and blood of Jesus, although their appearances remain the same.