ἱλέωσις
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → For extreme diseases, extreme methods of cure, as to restriction, are most suitable.
English (LSJ)
[ῑλ], εως, ἡ,
A propitiation, Plu.in Hes.26.
Greek (Liddell-Scott)
ἱλέωσις: -εως, ἡ, ἐξιλέωσις, Μιχ. Ψελλ. ἐκ τῶν Χαιρήμονος Αἰγυπτιακῶν, Bull. d. cor. hell. I. σ. 201.