Perichoresis

Perichoresis (from Greek: περιχώρησις perikhōrēsis, "rotation") is a term referring to the relationship of the three persons of the triune God (Father, Son, and Holy Spirit) to one another. Circumincession is a Latin-derived term for the same concept. It was first used as a term in Christian theology, by the Church Fathers. The noun first appears in the writings of Maximus Confessor (d. 662) but the related verb perichoreo is found earlier in Gregory of Nazianzus (d. 389/90). Gregory used it to describe the relationship between the divine and human natures of Christ as did John of Damascus (d. 749), who also extended it to the "interpenetration" of the three persons of the Trinity, and it became a technical term for the latter. It has been given recent currency by such contemporary writers as Jürgen Moltmann, Miroslav Volf, John Zizioulas, Richard Rohr, and others.

Modern authors extend the original usage as an analogy to cover other interpersonal relationships. The term "co(-)inherence" is sometimes used as a synonym.