Parthian UK /ˈpɑːθɪən/US /ˈpɑɹθiən/adjective 2noun 2forms 1 adjective2 •Relating to Parthia or Parthians. •Delivered as if in retreat.a Parthian shot noun2 •A native or inhabitant of Parthia. •An extinct Western Iranian language that was spoken in Parthia. formsParthians