noun Christian theology(in the belief of High-Church Anglicans)
1.
the doctrine that after the consecration of the Eucharist the substance of the body and blood of Christ coexists within the substance of the consecrated bread and wine
2.
the mystical process by which this is believed to take place during consecration
Compare transubstantiation
consubstantiation in American English
(ˌkɑnsəbˌstænʃiˈeɪʃən)
noun Theology
the doctrine that the substance of the bread and wine of the Eucharist exists, after consecration, side by side with the substance of the body and blood of Christ but is not changed into it
Word origin
ML(Ec) consubstantiatio < LL(Ec) consubstantiare (see consubstantiate), modeled on transubstantio: see transubstantiation