κοινογονία
From LSJ
λύπης ἰατρός ἐστιν ὁ χρηστὸς φίλος → a true friend is grief's physician, a worthy friend is a physician to your pain
English (LSJ)
ἡ,
A mixing of breeds, opp. ἰδιογονία, ib.d.
German (Pape)
[Seite 1468] ἡ, gemeinschaftliche Zeugung verschiedener Gattungen, wie des Pferdes u. Esels, Plat. Polit. 265 d, Ggstz ἰδιογονία.