ὑπέρβλημα
From LSJ
οἵ γε καὶ ἐν τῷ παρόντι ἀντιπάλως μᾶλλον ἢ ὑποδεεστέρως τῷ ναυτικῷ ἀνθώρμουν → whose navy, even as it was, faced the Athenian more as an equal than as an inferior
English (LSJ)
ατος, τό,
A portion of an area projecting beyond a given line, Archim.Con.Sph.2, al.; excess of one magnitude over another, Simp. in Ph.973.9.