Lexical Definition

‎ἀποκαταλλάσσω‎ apokatallássō (ap-ok-at-al-las'-so) to reconcile ^G:V
from ‎ἀπό‎ and ‎καταλλάσσω‎

reconcile.

• to reconcile fully

Abbott-Smith

*† ἀπο-κατ-αλλάσσω (cf. καταλλάσσω: ἀπό here signifies completely, v. Lft., Col., 1:20, 21; Ellic., Eph., 2:16; but also Mey., Eph., 2:16),
to reconcile completely: Eph 2:16, Col 1:20, 21.†

Abbott-Smith References

Liddell-Scott-Jones

ἀποκαταλλάσσω,

Attic dialect ἀποκαταλλάττω, reconcile again, [NT]; τὰ πάντα εἰς αὑτόν[NT]

_{LSJ Scripture Refs: Eph.2.16 ☩ Col.1.20}