διάλληλος
From LSJ
ὁποία δ' ἦν αὕτη ἡ παίδευσις δύναταί τις γιγνώσκειν διάλογόν τινα τοῦ Πλάτωνος σκοπῶν → It's possible to find out what kind of education that was by examining one of Plato's dialogues
English (LSJ)
ον,
A reciprocating, λόγος Stoic. 2.90; interchangeable, of the order of words, A.D.Adv.126.2; confused, of argument, Id.Pron.50.20; διάλληλος τρόπος argument in a circle, S.E.P.1.117, 2.68; δ. δεῖξις Dam.Pr.290. II interrelated, interdependent, Plot.6.8.14.