καθάρευσις
From LSJ
τὰ καλὰ καὶ συμφέροντα ταῖς ψυχαῖς ἡμῶν καὶ εἰρήνην τῷ κόσμῳ → what is good and profitable to our souls, and for peace to the world
English (LSJ)
εως, ἡ,
A gloss on ἁγιασμός, Hsch., cf. EM10.38.
German (Pape)
[Seite 1281] ἡ, das Reinsein, Hesych.