Lexical Definition

‎δικαίωσις‎ dikaíōsis (dik-ah'-yo-sis) justification ^G:N-F
from ‎δικαιόω‎

justification.

• aquittal (for Christ's sake)

Abbott-Smith

δικαίωσις, -εως, ἡ (< δικαιόω), [in LXX for מִשְׁפָּט, Le 24:22 * ;]
the act of pronouncing righteous, justification, acquittal: Ro 4:25 5:18 (Cremer, 199).†

Abbott-Smith References

Liddell-Scott-Jones

δικαίωσις-ωσις, εως, ἡ,

setting right, doing justice to: hence,

__1 condemnation, punishment, [Refs 5th c.BC+]
__2 plea of legal right, justification, [Refs 5th c.BC+]
__3 making or accounting righteous, justification, [NT]
__II demand of right or as of right, just claim, [Refs 5th c.BC+]
__III judgement of what is right, ἀντήλλαξαν τῇ δικαιώσει altered at their will and pleasure, [Refs 5th c.BC+]

_{LSJ Scripture Refs: Rom.4.25}