Medical Definition of capillaria
1 capitalized : a genus of slender white nematode worms of the family Trichuridae that include serious pathogens of the digestive tract of fowls and some tissue and organ parasites of mammals including one (C. hepatica) which is common in rodents and occasionally invades the human liver sometimes with fatal results
2: a nematode worm of the genus Capillaria
capillarid\-ˈlar-əd, kə-ˈpil-ə-rəd\play noun
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