1A country in western Europe, situated between Belgium, Germany, and France; population 567,000 (estimated 2015); official languages, Luxemburgish, French, and German; capital, Luxembourg.
- 1.1The capital of Luxembourg; population 88,600 (est. 2009). It is the seat of the European Court of Justice.
- 1.2A province of south-eastern Belgium, until 1839 a province of Luxembourg; capital, Arlon.
Annexed by France in 1795, Luxembourg became an independent grand duchy as a result of the Treaty of Vienna in 1815. It formed a customs union with Belgium in 1922, extended in 1948 into the Benelux Customs Union with the Netherlands. It was a founder member of the EEC in 1957