a mountainous principality in SW Europe, between France and Spain: according to tradition, given independence by Charlemagne in the 9th century for helping to fight the Moors; placed under the joint sovereignty of the Comte de Foix and the Spanish bishop of Urgel in 1278; under the joint overlordship of the French head of state and thebishop of Urgel from the 16th century; adopted a constitution reducing the powers of the overlords in 1993. Official language: Catalan. Religion: Roman Catholic. Currency: euro. Capital: Andorra la Vella. Pop: 76 965 (2017 est). Area: 464 sq km (179 sq miles)