διπλασιεπιδίτριτος
From LSJ
Κύριε, βοήθησον τὸν δοῦλον σου Νῖλον κτλ. → Lord, help your slave Nilos ... (mosaic inscription from 4th-cent. church in the Negev)
English (LSJ)
ον, ibid., Domnin. in Rev.Phil.7.90, 2⅔ times as great.
Spanish (DGE)
-ον
de proporción 2⅔ Nicom.Ar.1.23, Domn.Prop.12, 16.
German (Pape)
2⅔mal so groß, Nicom. inst.arithm. 1.23.