plerocercoids

/ˌplɪroʊˈsɜːrkɔɪdz/
noun
  1. The larval stage of certain tapeworms, found in the tissues of fish or other intermediate hosts, which can infect humans who eat raw or undercooked seafood.
    • Plerocercoids can cause a serious infection called sparganosis if they enter the human body.
    • The sushi chef carefully inspected the fish for any visible plerocercoids before serving.
    • Researchers found plerocercoids in the muscle tissue of freshwater fish from the lake.