The doctrine held by Roman Catholics, that the bread and wine in the Mass is converted into the body and blood of Christ; -- distinguished from consubstantiation, and impanation.
Transubstantiation is from the two Latin words [ trans], being the intensifying prefix meaning "across," or by extension, "through," and [ substantia], which means substance. Thus it means the bread actually transforms through the substance of the body. Mainly recognized by Roman Catholicism and Eastern Orthodox Churches, this is a teaching of the Christian communion supper wherein they believe that the bread and wine very literally transform into the actual substance of the body and blood of Jesus Christ. This is in contrast to Consubstantiation, where Christians believe that the bread and body are "a combination of two substances." Transubstantiation is the belief that the Eucharist becomes the actual flesh and blood of Christ. [ back