plerocercoid UK /ˌplɪə.ɹə(ʊ)ˈsɜː.kɔɪd/US /ˌplɪɹ.oʊˈsɝˌkɔɪd/ noun1 •An unsegmented worm-like larval form of certain tapeworms which develops from the procercoid. formsplerocercoids