[ < pycno-comb. form + Hellenistic Greek μετοχή participle, specific use of ancient Greek μετοχή participation, sharing (see metochyn.) + -iasuffix1] Grammarrare = polymetochian. at poly-comb. form 1.
ΚΠ
1907 N.E.D. at Poly-Pycnometochia, the close connexion or frequent use of participles or participial phrases; polymetochia.