a state in central South Australia whose capital is Adelaide. State (pop., 2001: 1,514,854), south-central Australia. It covers an area of 379,720 sq mi (983,470 sq km), and its capital is Adelaide. The Dutch visited the coast in 1627. British explorers arrived in the early 1800s, and it was colonized as a British province in 1836. Its vast interior, a large part of which is barren, includes Lake Eyre and the Flinders Ranges. A major world source of opals, it also produces most of the wine and brandy consumed in Australia. It has the country's largest shipyards. It became a state of the Commonwealth of Australia in 1901. Its southeastern part has become industrialized since World War II