Zeon
In the eastern liturgical tradition, hot water is added to the chalice after the breaking of the bread to symbolize the descent of the Spirit and the vibrant energy of faith. This practice is known as the zeon. The term is from the Greek for “boiling.”
Glossary definitions provided courtesy of Church Publishing Incorporated, New York, NY,(All Rights reserved) from “An Episcopal Dictionary of the Church, A User Friendly Reference for Episcopalians,” Don S. Armentrout and Robert Boak Slocum, editors.