ἰσοδυναμία
From LSJ
μηδὲν κοτυλίζειν, ἀλλὰ καταπάττειν χύδην → not to sell by the cupful, but to dole out indiscriminately | not to sell by retail but wholesale
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.