ascariasis

[as-kuh-rahy-uh-sis]
noun Pathology.
infestation with ascarids, especially Ascaris lumbricoides.

Origin:
1885–90; < Neo-Latin; see ascarid, -iasis

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Collins
World English Dictionary
ascariasis (ˌæskəˈraɪəsɪs)
 
n
infestation of the intestines with the roundworm Ascaris lumbricoides, causing abdominal pain, nausea and vomiting, weight loss, etc

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

ascariasis as·ca·ri·a·sis (ās'kə-rī'ə-sĭs)
n.
A disease caused by infestation with worms of the genus Ascaris.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica
Encyclopedia

ascariasis

infection of humans and other mammals caused by the intestinal roundworm Ascaris lumbricoides. Infection follows the ingestion of Ascaris eggs that have contaminated foods or soil. In the small intestine the larvae are liberated and migrate through the intestinal wall, reaching the lungs, where they may produce a host sensitization that results in lung inflammation and fluid retention. About 10 days later, the larvae pass from the respiratory passages into the digestive tract and mature into egg-producing worms, which grow to some 15 to 40 cm (6 to 16 inches) in length, in the small intestine. Serious, even fatal, complications of ascariasis result from the infiltration of the larvae into sensitive tissues, such as the brain, and from the migration of the adult worms into various body structures where they produce abcesses and toxic manifestations.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Ascariasis is caused by consuming food or drink contaminated with roundworm eggs.
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