Definition: An "apostolic delegate" is a person who represents the Pope and the Vatican (the headquarters of the Roman Catholic Church) in a country. This usually happens in countries that do not have formal diplomatic relations with the Vatican, meaning they do not have an official ambassador or embassy.
In more complex discussions, you might find the term used in contexts involving diplomatic missions, Church governance, or international relations between religious institutions and governments.
While "apostolic delegate" specifically refers to a representative of the Pope, the word "apostolic" on its own relates to the apostles (the early followers of Jesus) and can mean something that is connected to their teachings or authority.
An "apostolic delegate" plays an important role in representing the Roman Catholic Church in countries where there is no official diplomatic relationship.