Lexical Definition

‎ἱλασμός‎ hilasmós (hil-as-mos') propitiation G:N-M
propitiation.

Usage: 7 forms in 7 verses
Form Translated As     In Verse(s)
ἱλασμὸν a propitiation 1John.4.10
ἱλασμόσ propitiation 1John.2.2
ιλασμόυ atonement LXX.Num.5.8
ιλασμόσ atonement LXX.Ps.130.4
ιλασμόν an atonement LXX.Ezek.44.27
ιλασμού atonement LXX.Amos.8.14
ιλασμοί atonements LXX.Dan.9.9

Abbott-Smith

ἱλασμός, -οῦ (< ἱλάσκομαι), [in LXX: Le 25:9, Nu 5:8 (כִּפֻּרִים), Ps 129(130):4, Da TH 9:9 (סְלִיחָה), Am 8:14 (אַשְׁמָה), Ez 44:27 (חַטָּאת), I Ch 28:20, Si 18:20 A, II Mac 3:33*;]
1. an appeasing (Plut.).
2. a means of appeasing, propitiation (Philo; Nu 5:8, Ez 44:27): I Jo 2:2 4:10.
3. In LXX also forgiveness (Ps 129(130):4, Da TH 9:9).†

Abbott-Smith References

Book Refs
Leviticus 25:9
Numbers 5:8
1 Chronicles 28:20
Psalms 130:4
Ezekiel 44:27
Daniel 9:9
Amos 8:14
1 John 2:2 · 4:10

Liddell-Scott-Jones

ἱλασμός-μός [], ,

a means of appeasing, in plural, [Refs 1st c.AD+]

__2 atonement, sinoffering, [LXX+NT+1st c.AD+]

LSJ Scripture Refs: LXX.Ezek.44.271John.2.2