ARCHDIOCESAN Meaning of ARCHDIOCESAN in English |ärch, |ȧch+ˌ ̷ ̷| ̷ ̷ ̷ ̷ ̷ ̷ adjective : of or relating to an archdiocese Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012