nuncio(redirected from Pro-nuncio)
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a permanent diplomatic representative of the pope in states with which the papacy maintains official diplomatic relations.
The nuncio corresponds in diplomatic rank to an ambassador extraordinary and plenipotentiary. The institution of the permanent representation of a nuncio appeared in the first half of the 16th century. In most Catholic countries, nuncios represent the senior officials (doyens) of the diplomatic corps.