εἰκοσαετηρίς
From LSJ
ὀδοῦσι καὶ ὄνυξι καὶ πάσῃ μηχανῇ → tooth and nail | tooth, fang, and claw | in every possible way | by hook or by crook
English (LSJ)
-ίδος, ἡ, period of twenty years, Ptol.Tetr.205.
Spanish (DGE)
-ίδος, ἡ
• Alolema(s): εἰκοσετ- D.C.58.24.1
1 período de veinte años Ptol.Tetr.4.10.7.
2 vicenales fiestas del vigésimo aniversario de los emperadores romanos τὴν δεκετηρίδα τὴν δευτέραν ἑώρτασαν. οὕτω γὰρ αὐτὴν, ἀλλ' οὐκ εἰκοσετηρίδα ὠνόμαζον D.C.l.c., εἰ. τῆς Κωνσταντίνου βασιλείας Soz.HE 1.25.1, cf. Socr.Sch.1.38, Eus.HE 8.13.9.