The Collaborative International Dictionary
Circumincession
Circumincession \Cir`cum*in*ces"sion\, n. [Pref. circum- + L. incedere, incessum, to walk.] (Theol.) The reciprocal existence in each other of the three persons of the Trinity.
Wiktionary
circumincession
n. (context theology English) The reciprocal existence in each other of the three persons of the Trinity.