A.turning oneself towards: hence,
1. of one who has incurred pollution by committing a crime and turns to a god or man to obtain purification, suppliant for purification, “τὸν προστρόπαιον, τὸν ἱκέτην” S.Ph.930, cf. A.Supp.362, Eu.234,445, S.Aj. 1173, E.Heracl.1015, etc.: as Adj., ἕδραν ἔχοντα π. A.Eu.41; “προστρόπαιοι λιταί” S.OC1309.
2. of one who has not yet been purified after committing crime, polluted person, E.HF1259; π. τῆς πόλεως bringing pollution on the city, prob. in Eup.120; “αὑτοῦ π., μὴ γὰρ δὴ τῆς πόλεως” Aeschin.2.158.
3. of pollution incurred, π. αἷμα blood that cries for vengeance, E.Ion 1260, HF1161; “οὐδενὶ οὐδὲν π. καταλείψει” Antipho 3.4.9: neut. as Subst., guilt, “προστρόπαιον ἑαυτοῖς προσέθεντο” D.C.42.3.
II. Pass. (= ᾧ ἄν τις προστρέποιτο δεόμενος, Eust.1807.11), the god to whom the murdered person turns for vengeance, avenger, οἱ τῶν θανόντων π. Antipho 4.1.4, cf. 4.2.8, Plb.23.10.2 (pl.), Paus.2.18.2.