perichoresis

The story

1. Ancient Greek · derived fromπεριχώρησις“going round, rotation”
2. English todayperichoresis

From Ancient Greek περιχώρησις (perikhṓrēsis, “going round, rotation”), from περιχωρέω (perikhōréō), from περί (perí, “around”) + χωρέω (khōréō, “go forward, travel”), because the relationship between the three members of the Trinity was described by early Christians as an eternal interpenetrating circulation.