from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An acute, often fatal viral disease endemic to West Africa and characterized by high fever, headache, ulcers of the mucous membranes, and disturbances of the gastrointestinal tract.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An acute, and often fatal, viral infection endemic to West Africa. Symptoms include fever, sore throat, muscle aches, a skin rash, headache, abdominal pain, vomiting, diarrhoea, ulcers, heart and kidney failure.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an acute contagious viral disease of central western Africa; characterized by fever and inflammation and muscular pains and difficulty swallowing; can be used as a bioweapon


After Lassa, a village of northeast Nigeria.
(American Heritage® Dictionary of the English Language, Fourth Edition)


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