internuntius
/ˌɪntəˈnʌntɪəs/ /ˌɪntəˈnʌn(t)ʃəs/ /ˌɪntəˈnʌnsɪəs/(also internuncius)
noun
1A messenger or mediator between two parties; especially (in early use) an intermediary between God and mankind.
2 Roman Catholic Church. A papal envoy to a foreign court or government; = internuncio. Now chiefly historical and rare.
3A diplomatic representative of a foreign government at the court of the Ottoman sultan; especially a representative of the Austrian Empire; = internuncio. Now historical and rare.
Origin
Mid 17th century. From classical Latin internuntius messenger, intermediary from inter- + nuntius.