FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

hilaskomai ἱλάσκομαι — hil-as'-kom-ahee — middle voice from the same as 2436; to conciliate, i.e. (transitively) to atone for (sin), or (intransitively) be propitious:--be merciful, make reconciliation for.

see GREEK for 2436