ἱλαστήριος, -α, -ον
(ἱλάσκομαι), [in LXX: 4Ma.17:22; neut., Exo.25:16 (17) ff. Exo.31:7 35:12 37:6 ff., Lev.16:2, 13 ff. Num.7:89 (כַּפֹּרֶת), Eze.43:14, 17 43:20 (עֲזָרָה) Amo.9:1 (on the original here, see Deiss., BS, 127)* ;]
propitiatory (μνῆμα, FlJ, Ant., xvi, 7, 1; θάνατος, 2Mac, l.with): of Christ, Rom.3:25; as subst., το ἱ. (sc. ἐπίθεμα, Exo.25:16-17, where the word first occurs in LXX and where ἱ. ἐ. = כַּפֹּרֶת (which see in BDB, see word), elsewhere rendered simply τὸ ἱ; cf. Deiss., 124 ff.; Westc., He., in l), Heb.9:5.†
(AS)