δυναμοδύναμις

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.