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A headstream of the Congo River, rising in southeast Democratic Republic of the Congo and flowing about 1,800 km (1,100 mi) north to the Boyoma (formerly Stanley) Falls, a series of seven cataracts southeast of Kisangani.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Placename) a river in the SE Democratic Republic of Congo, rising in Katanga province and flowing north as the W headstream of the River Congo. Length: about 1800 km (1100 miles)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌlu ɑˈlɑ bɑ)

a river in the SE Democratic Republic of the Congo: a headstream of the Zaire (Congo) River. 400 mi. (645 km) long.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
In 2017, non-hot spot health zones along the Lualaba River, a tributary of the Congo, also started to report cases.
Among the major suppliers were the mini-states that mutineers from the armies of the Congo State had organized west of the Lualaba River, the main stream of the upper Congo River system, then out of reach of "Belgian" control.
At least 14 people died in September after their boat sank on an isolated stretch of the Lualaba river in the southern province of Katanga.