An Apostolic Nunciature is a top level diplomatic mission of the Holy See, equivalent to an embassy or to a High Commission between members of the Commonwealth of Nations.
The head of the Apostolic Nunciature is called nuncio. A nuncio is an ecclesiastical diplomatic title, derived from the ancient Latin nuntius, meaning any envoy. A papal nuncio (officially known as an Apostolic nuncio) is a permanent diplomatic representative (head of diplomatic mission) of the Holy See to a state or international organization (e.g., the Arab League), having the rank of an ambassador extraordinary and plenipotentiary, usually with the ecclesiastical rank of titular archbishop.
In addition, the nuncio serves as the liaison between the Holy See and the Church in that particular nation, supervising the diocesan episcopate (usually a national conference of bishops which has its own chairman, usually the highest ranking (arch)bishop, especially if his seat carries the title of primate or he has individually been created a cardinal) and has an important role in the selection of bishops.
nunciature in German: Apostolische Nuntiatur
nunciature in Spanish: Nunciatura apostólica
nunciature in French: Nonciature apostolique
nunciature in Italian: Nunziatura apostolica
nunciature in Lithuanian: Apaštališkoji nunciatūra
nunciature in Polish: Nuncjatura apostolska
nunciature in Portuguese: Nunciatura apostólica
nunciature in Romanian: Nunţiatură apostolică
nunciature in Simple English: Apostolic Nunciature