συσσιτέω
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)
A mess with, τινι Ar.Eq.1325 (anap.), Lys.13.79, Thphr. Char.10.3, etc.; μετ' ἀλλήλων Arist.Pol.1317b38:—Med., σ. ἀλλήλοις Philostr.Her.2.3: abs. in pl., mess together, συσσιτοῦμεν . . ἐγώ τε καὶ Μελησίας Pl.La.179b, cf. Smp.219e, D.19.191.