MDDM Ch. 38 Holy Communion (Batman)

[jbor]

    With his recent animadversions on the Lord's Supper, [the Rev.d] is
    attending more to Food, and its preparation. "I thought I had put
    behind me," he writes, "the questions of whether the Body and Blood
    of Christ are consubstantiate with, or transubstantiated from, the Bread
    and Wine of the Eucharist [...] " (385.30)

consubstantiation  The doctrine according to which the substances *both* of
the blood and body of Christ *and* of the bread and wine coexist in the
eucharistic elements after their consecration. It was formulated (though he
may not have used the term) by Luther in opposition to the medieval teaching
of transubstantiation. He illustrated it by the analogy of an iron put into
the fire: both fire and iron are united in the red-hot iron, but both are
still present.

transubstantiation  In Catholic theology of the eucharist, the change of the
substance (underlying reality) of the bread and wine into the blood and body
of Christ, leaving the 'accidents' (i.e. the appearances of the bread and
wine) intact, so that faithful do not literally touch Christ's body. The
term was recognised at the Lateran Council of 1215, and was formally defined
at Trent in 1551. Depending on Aristotleian categories, especially as
formulated by St Thomas Aquinas, recent (R.) Catholic theology has sought to
express the change in other terms (eg. transignification, which points to
the change in the relation of the individual to God through Christ in this
self-giving action). The E. Church entertains an essentially identical
doctrine to transubstantiation, but many modern Orthodox theologians avoid
the term because of its association with Latin scholasticism.

best