ἰδιασμός
From LSJ
τὸ ἀγαθὸν αἱρετόν· τὸ δ' αἱρετὸν ἀρεστόν· τὸ δ' ἀρεστὸν ἐπαινετόν· τὸ δ' ἐπαινετὸν καλόν → what is good is chosen, what is chosen is approved, what is approved is admired, what is admired is beautiful
English (LSJ)
ὁ,
A peculiarity, Iamb.VP35.255. 2 particularity, ὁ τοῦ ἑνὸς ἀπεστενωμένος ἰ. Dam.Pr.28 bis.
German (Pape)
[Seite 1235] ὁ, Eigenthümlichkeit, Sonderbarkeit, Iambl.; auch ἰδίασις, ἡ, Sp.