ἀδαμαντόδετος
From LSJ
προγράψαντες οὖν τά τε θεωρήματα καὶ τὰ ἐπιτάγματα τὰ χρεῖαν ἔχοντα εἰς τὰς ἀποδείξιας αὐτῶν μετὰ ταῦτα γραψοῦμές τοι τὰ προκείμενα → having therefore written at the beginning the theorems and the postulates that are necessary for their proofs, we will then write out for you the propositions
English (LSJ)
ον,
A iron-bound, λῦμαι A.Pr.148,426(lyr.).
Greek (Liddell-Scott)
ἀδᾱμαντόδετος: -ον, ὁ διὰ δεσμῶν ἐκ χάλυβος δεδεμένος, ἀδαμαντοδέτοισι λύμαις, Αἰσχύλ. Πρ. 148, 426 (λυρ.).