- Also called African sleeping sickness, African trypanosomiasis. a generally fatal disease, common in parts of Africa, characterized by fever, wasting, and progressive lethargy: caused by a parasitic protozoan, Trypanosoma gambiense or T. rhodesiense, that is carried by a tsetse fly, Glossina palpalis.
- Also called epidemic encephalitis, lethargic encephalitis. a viral disease affecting the brain, characterized by apathy, sleepiness, extreme muscular weakness, and impairment of vision.
Also British, sleep·y sick·ness.
Origin of sleeping sickness
First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- pathol a technical name for sleeping sickness (def. 2)
- Also called: African sleeping sickness an African disease caused by infection with protozoans of the genus Trypanosoma, characterized by fever, wasting, and sluggishness
- Also called (esp formerly): sleepy sickness an epidemic viral form of encephalitis characterized by extreme drowsinessTechnical name: encephalitis lethargica
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- encephalitis lethargica
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- An often fatal protozoan infection prevalent in tropical Africa, caused by either of two trypanosomes spread by the bite of the tsetse fly and characterized by fever and extreme lethargy.
- Encephalitis that is caused by any of various viruses and is characterized by lethargy and extreme muscular weakness.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.