ὑπονόστησις
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
English (LSJ)
εως, ἡ,
A retirement, sinking, subsiding, θαλάσσης Plu. Ant.3; of the Nile, Hld.9.22 (pl.); ὑ. ἀέρος εἰς γῆν, as a definition of an earthquake, Anaxag. ap. D.L.2.9; τοῦ θερμοῦ Gal.1.689: metaph., ἀλαζονείας Ph.Fr.102 H.
German (Pape)
[Seite 1227] ἡ, Rückkehr, – das Heruntergehen, Sinken, Plut. Ant. 3; καὶ αὐξήσεις, vom Nil, Mel. 9, 23.