ἱλαστής
From LSJ
Περὶ τοῦ ἐπέκεινα τοῦ νοῦ κατὰ μὲν νόησιν πολλὰ λέγεται, θεωρεῖται δὲ ἀνοησίᾳ κρείττονι νοήσεως → On the subject of that which is beyond intellect, many statements are made on the basis of intellection, but it may be immediately cognised only by means of a non-intellection superior to intellection
English (LSJ)
οῦ, ὁ, A propitiator, Aq., Thd.Ps.85(86).5, f.l. in LXX 1 Es.8.53.
German (Pape)
[Seite 1251] ὁ, der Versöhner, Sp.
Greek (Liddell-Scott)
ἱλαστής: -οῦ, ὁ, ὁ ἐξιλεωτής, Ἀκύλας, Θεοδ. Ψαλμ. ΠΔ΄, 4.