πεντεκαιδεκάχορδος
From LSJ
νεκρὸν ἐάν ποτ' ἴδηις καὶ μνήματα κωφὰ παράγηις κοινὸν ἔσοπτρον ὁρᾶις· ὁ θανὼν οὕτως προσεδόκα → whenever you see a body dead, or pass by silent tombs, you look into the mirror of all men's destiny: the dead man expected nothing else | if you ever see a corpse or walk by quiet graves, that's when you look into the mirror we all share: the dead expected this
English (LSJ)
[ᾰ], ον,
A with fifteen strings, Adrast. ap. Theon. Sm. p.64 H., Ptol.Harm. 3.1 tit., Porph. in Harm. p.168 D.
Greek (Liddell-Scott)
πεντεκαιδεκάχορδος: -ον, ὁ ἀποτελούμενος ἐκ δεκαπέντε χορδῶν, Θέων Σμυρν. σ. 98.