PRUSA, in Ancient Geography, a town situated at Mount Olympus in Myria, built by Prusias, who waged war with Creesus, (Strabo); with Cyrus, (Stephanus); both contemporary princes. Now called Bursa or Prusa, capital of Bithynia, in Asia Minor. E. Long. 29. 5. N. Lat. 39. 22.