δεκετηρίς
From LSJ
εἰς δὲ θεοὺς ἀσεβείας τε καὶ εὐσεβείας καὶ γονέας καὶ αὐτόχειρος φόνου μείζους ἔτι τοὺς μισθοὺς διηγεῖτο → and he had still greater requitals to tell of piety and impiety towards the gods and parents and of self-slaughter
English (LSJ)
ίδος, ἡ,
A space of ten years, D.C.53.16 (pl.); = Lat. Decennalia, BGU362 iii 24 (iii A. D.).
German (Pape)
[Seite 543] ίδος, ἡ, Zeitraum von zehn Jahren, Dio Cass. 53, 16.