IDDIN, a city of Turkey in Europe, the capital of the province of the same name. It stands on the river Danube, and is one of the strongest fortifications of the empire. In the river opposite to it is an island, also covered with strong military works. It is the seat of a Greek bishop, has numerous mosques, and, it is said, 25,000 inhabitants, who carry on fisheries on the Danube, and considerable trade with their neighbours in the Austrian territories.