ῥύψις
From LSJ
ἰὼ, σκότος, ἐμὸν φάος, ἔρεβος ὦ φαεννότατον, ὡς ἐμοί, ἕλεσθ' ἕλεσθέ μ' οἰκήτορα → ah, darkness that is my light, gloom that is most bright for me, take me, take me to dwell in you
English (LSJ)
εως, ἡ, (ῥύπτω)
A cleansing, purifying, Pl.Ti.65e, Ti.Locr.100e.
German (Pape)
[Seite 854] ἡ, die Reinigung, Plat. Tim. 65 a.