ἑπτακαίδεκα
From LSJ
ἀρετὰ γὰρ ἐπαινεομένα δένδρον ὣς ἀέξεται → for virtue that is praised grows like a tree, praised virtue will grow like a tree
English (LSJ)
οἱ, αἱ, τά, indecl.
A seventeen, Hdt.1.50, al.; in Hom., ἑπτὰ δὲ καὶ δέκα Od.5.278, al.
German (Pape)
[Seite 1012] οἱ, αἱ, τά, indeclin., siebenzehn, Her. u. Folgde.
Greek (Liddell-Scott)
ἑπτᾰκαίδεκα: οἱ, αἱ, τά, ἄκλ., δεκαεπτά, Ἡρόδ. 1. 50 κ. ἀλλ.˙ παρ’ Ὁμ., ἑπτὰ δὲ καὶ δέκα Ὀδ. Ε. 278 κ. ἀλλ.