companation
/ˌkɒmpəˈneɪʃn/Theology
noun
In the Eucharist: (the doctrine of) the real presence of the body of Christ in the consecrated Host, alongside the unchanged substance of the bread.
Origin
Late 16th century; earliest use found in The New Testament of Jesus Christ. From post-classical Latin companation-, companatio from classical Latin com- + pānis bread + -atiō.