ἰσάκις
From LSJ
οὗτος μὲν ὁ πιθανώτερος τῶν λόγων εἴρηται, δεῖ δὲ καὶ τὸν ἧσσον πιθανόν, ἐπεί γε δὴ λέγεται, ῥηθῆναι → this is the most credible of the stories told; but I must relate the less credible tale also, since they tell it
English (LSJ)
[ῐσᾰ], Adv. from ἴσος,
A the same number of times, as many times, Str.3.5.8; ἰ. πολλαπλάσιος c. gen., the same multiple of... Euc.7 Def.21, al.; ἰ. πολλαπλάσια equimultiples, Id.5Def.5, al.; ἰ. ἴσος, of a number, equal multiplied by equal, i.e. square, Pl.R.546c, Tht. 147e, 148a, Euc.7 Def.19, Ph.1.11, etc.; ἰ. ἴσος ἰ. equal multiplied by equal multiplied by equal, i.e. cube number, Euc.7 Def.20, etc.
German (Pape)
[Seite 1263] gleichvielmal; Plat. Theaet. 147 e; Mathem.