town located in northwestern Guinea-Bissau. It lies on a tributary of the Cacheu River and is surrounded by the Casamance woodland, which provides hardwoods for export. A power station supplies the town's industry, which includes a sawmill. Subsistence agriculture predominates in the surrounding area, and corn (maize), sorghum, millet, sweet potatoes, cassava (manioc), and beans are the principal crops. Bissorã is connected by road with Bissau, the national capital. Pop. (2004 est.) 50,774.