προθνήσκειν

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

Source

Greek > English (Woodhouse Verbs Reversed)

(see also: προθνήσκω) be a martyr to, die for

Lexicon Thucydideum

prius mori, to die first, 2.52.4.