SINCE 1828
Ostertagia
noun
Os·ter·ta·gia
| \ ˌäs-tər-ˈtā-j(ē-)ə
\
\
Medical Definition of Ostertagia
: a genus of slender brown nematode worms of the family Trichostrongylidae that are parasitic in the abomasum of ruminants
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