ἰσοδυναμία
From LSJ
Ὁ δὲ μὴ δυνάμενος κοινωνεῖν ἢ μηδὲν δεόμενος δι' αὐτάρκειαν οὐθὲν μέρος πόλεως, ὥστε ἢ θηρίον ἢ θεός → Whoever is incapable of associating, or has no need to because of self-sufficiency, is no part of a state; so he is either a beast or a god
English (LSJ)
ἡ,
A equal force or power, Ti.Locr.95b. 2 equivalence in meaning, A.D.Conj.244.17. 3 Astrol., equipollence, Ptol.Tetr.132, Vett.Val.296.11.
German (Pape)
[Seite 1264] ἡ, gleiche Macht, Bedeutung, Geltung; Tim. Locr. 95 c; Sp.