(Balukiser), a town of Asia Minor, capital of the Karasi sanjak in the vilayet of Brusa, altitude 575 ft., situated on rising ground above a fertile plain which drains to the Sea of Marmora. Pop. 20,000 (Moslems, 15,000; Christians, 5000). It is a centre of trade in opium, silk and cereals, communicating by carriage roads with Panderma. The sanjak is rich in mineral wealth; silver mines are worked at Balia and boracite mines at Susurlu. At or near Balikisri was the Roman town of Hadrianutherae, founded, as its name commemorates, by the emperor Hadrian.