δυναμοδύναμις
From LSJ
κεῖται μὲν γαίῃ φθίμενον δέμας, ἡ δὲ δοθεῖσα ψυχή μοι ναίει δώματ' ἐπουράνια → my body lies mouldering in the ground, but the soul entrusted to me dwells in heavenly abodes
English (LSJ)
εως, ἡ,
A square multiplied by square, fourth power, Hero Metr.1.17; fourth power of unknown quantity (x4), Dioph. Def.1 (pl.), al.: —hence δῠνᾰμο-δῠνᾰμοστόν, τό, the fraction 1/x4, Id.Def.3, al.
German (Pape)
[Seite 673] ἡ, das Quadrat des Quadrats, Diophant.
Greek (Liddell-Scott)
δῠναμοδύναμις: -εως, ἡ, δύναμις δυνάμεως, π.χ. τὸ τετράγωνον τοῦ τετραγώνου, Διόφαντ. 2.