epiclesis

Learned borrowing from Ancient Greek ἐπίκλησις (epíklēsis, “invocation”).

epiclesis (plural epicleses)

1. (Christianity) A prayer invoking the Holy Spirit, especially one offered in the liturgical context of the Eucharist so as to change the elements of bread and wine into the body and blood of Jesus.

   Holonym: anaphora

2. (Greek mythology, Roman mythology) A particular appearance or aspect of a deity.