διαστόμωσις
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, expansion, Alex.Aphr.Pr.1.93.
Spanish (DGE)
-εως, ἡ dilatación del ano, Alex.Aphr.Pr.1.93.
Greek (Liddell-Scott)
διαστόμωσις: -εως, ἡ, διάνοιξις, Ἀλ. Ἀφροδ. Προβλ. 1.
German (Pape)
ἡ, Öffnung eines geschlossenen Teils, Sp.