1. A papal ambassador or diplomatic representative of the Pope to a foreign government.
Usage: formal; religious/diplomatic context

Examples

• The nuncio presented his credentials to the foreign minister.
• The Vatican appointed a new nuncio to represent the Pope's interests in the country.
• As a nuncio, he served as a bridge between the Catholic Church and the government.
• The nuncio attended the state dinner in his official capacity.
• Diplomatic relations improved after the arrival of the experienced nuncio.