Ostertagia

noun
Os·​ter·​ta·​gia | \ ˌäs-tər-ˈtā-j(ē-)ə How to pronounce Ostertagia (audio) \

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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