ἱλασμός (hilasmós|hil-as-mos'|noun|propitiation)
[Grk] ἱλασμός LN: 40.12 GK: G2662 Hebrew: אַשְׁמָה‎, חַטָּאָה‎, כִּפֻּר‎, סְלִיחָה‎

Strong's: atonement, i.e. (concretely) an expiator
KJV: --propitiation.