† polyarthrousadj. [ < poly-comb. form + ancient Greek ἄρθρον joint (see arthro-comb. form) + -oussuffix; compare Hellenistic Greek πολύαρθρος having many articulations (Galen)] Obsoleterare having many joints.Apparently only attested in dictionaries or glossaries.
ΚΠ
1890 Cent. Dict. XVI. 4600/1Polyarthrous, having many joints or jointed parts; multiarticulate.