This term means interpenetration and mutual indwelling of the three Persons of the Trinity. This understanding maintains the distinction and unity of the divine Persons. It avoids the trinitarian heresies of modalism and tritheism. See Trinity.
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.