#2643 καταλλαγή katallage {kat-al-lag-ay'}

 from G2644; TDNT - 1:258,40; n f

—Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)

 1) exchange
    1a) of the business of money changers, exchanging equivalent values
 2) adjustment of a difference, reconciliation, restoration to favour
    2a) in the NT of the restoration of the favour of God to sinners
        that repent and put their trust in the expiatory death of
        Christ

—Thayer's (New Testament Greek-English Lexicon)

—Strong's (Greek Dictionary of the New Testament)

—NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries

 AV - reconciliation 2, atonement 1, reconciling 1; 4

—Exhaustive Concordance (KJV Translation Frequency & Location)