N’Dja·me·na or N’dja·me·na or Ndja·me·na (?n-jä?m?-n?) Formerly Fort-La·my (fôr-lä-m??) The capital and largest city of Chad, in the southwest part of the country on the Chari River. Founded by the French in 1900, it was renamed in 1973.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.N’Dja?me?na (?n d???me? n?) n. the capital of Chad, in the SW part. 511,700. Formerly, Fort-Lamy. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.