τριτημόριον

From LSJ

τὸ ἐμόν γ' ἐμοὶ λέγεις ὄναρ → you are telling me what I know already, you are telling me my own dream

Source

Russian (Dvoretsky)

τρῐτημόριον: τό третья часть, треть Her., Thuc. etc.

German (Pape)

τό, neutr. zu τριτημόριος, der dritte Teil, das Dritteil; Her. 9.34, Thuc. 2.98, Plat. Phaed. 105b. – Eine Münze, sechs χαλκοῦς wert.

Lexicon Thucydideum

tertia pars, third part, one third, 2.98.4.