epiclesis
noun/ɛpɪˈkli.sɪs/ · /ɛpɪˈkleɪ.sɪs/
Etymology Learned borrowing from Ancient Greek ἐπίκλησις (epíklēsis, “invocation”).
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.
2
Human sciences, Mysticism, Mythology, Philosophy, Sciences Greek, Roman A particular appearance or aspect of a deity.