a town of Naples, province of Abruzzo-Citria, on the shore of the Adriatic, 11 miles E. of Chieti. It contains a cathedral and several other churches; and gives its title to a bishop. There is a small harbour, by means of which an active trade is carried on in the wine grown in the vicinity, said to be the best in this part of Italy. Ortona occupies the site of the ancient town of the same name, which was the principal maritime town of the Frentani. Some ancient remains have been found here. Pop. 6000.

ORURO, a mining town of Bolivia, capital of a department of the same name, stands on a bare hill, 13,000 feet above the sea, on the right bank of the Desaguadero, where it falls into Lake Aullagas. The population has declined very much, and the town is surrounded by the ruins of houses that were once inhabited. Pop. 6000.

The department of Oruro is bounded on the N. by the department La Paz, E. by those of Cochabamba and Chuquisaca, S. by that of Potosi, and W. by Peru; area, 25,842 square miles. Pop. 117,000.