[ ong-koh-ser-kahy-uh-sis ]
/ ˌɒŋ koʊ sərˈkaɪ ə sɪs /
an infestation with filarial worms of the genus Onchocerca, common in tropical America and Africa, transmitted by black flies, and characterized by nodules under the skin, an itchy rash, eye lesions, and in severe cases, elephantiasis.
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Also on·cho·cer·co·sis [ong-koh-ser-koh-sis]. /ˌɒŋ koʊ sərˈkoʊ sɪs/.
Also called river blindness.
Words nearby onchocerciasis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for onchocerciasis
/ (ˌɒŋkəʊsəˈkaɪəsɪs) /
noun plural -ses (-siːz)
a disease found in parts of Africa and tropical America that is caused by a parasitic worm, Onchocerca volvulus, and transmitted to humans by various species of black fly. It results in inflammation of the skin and in some cases blindnessAlso called: river blindness
Word Origin for onchocerciasis
C20: from Onchocerca, the genus of worms + -iasis
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
Medical definitions for onchocerciasis
[ ŏng′kō-sər-kī′ə-sĭs ]
A disease occurring in tropical Africa and Central America, transmitted by black flies and caused by infestation with filariform nematodes of the genus Onchocerca, especially O. volvulus, and characterized by nodular swellings on the skin and lesions of the eyes.river blindness volvulosis
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.