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nem·a·to·di·ri·a·sis | \ ˌnem-ə-ˌtō-di-ˈrī-ə-səs 
\
\ plural nematodiriases\ -ˌsēz \
\Medical Definition of nematodiriasis
: an infestation of the small intestine especially of sheep by nematode worms of the genus Nematodirus that is characterized primarily by the scours
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