ἀντιπεραῗτις
From LSJ
Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνον → Anaxagoras used to say that we have two teachers for death: the time before we were born and sleep | Anaxagoras said that there are two rehearsals for death: the time before being born and sleep
Spanish (DGE)
-ιδος
fem. situado enfrente ἡ γῆ ἡ ἀντιπεραῗτις Tz.H.1.899.