Mazaruni (mäzərōˈnē) [key], river, c.350 mi (560 km) long, rising in the Guiana Highlands, NW Guyana, and flowing generally E to the Essequibo River at Bartica. The river is the center of Guyana's diamond industry.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.