verb [with object] (usually be transubstantiated) Christian Theology
1Convert (the substance of the Eucharistic elements) into the body and blood of Christ. 1.1 formal Change the form or substance of (something) into something different.
Late Middle English: from medieval Latin transubstantiat- 'changed in substance', from the verb transubstantiare, from Latin trans- 'across' + substantia 'substance'.
Words that rhyme with transubstantiateinstantiate, substantiate
Definition of transubstantiate in: