Strong’s Greek
G1347 — dikaiosis
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
δικαίωσις
dikaiosis — pronounced dik-ah'-yo-sis
from 1344; aquittal (for Christ's sake):--justification. see GREEK for 1344
2 occurrences in the KJV.
Romans 4:25
Who was delivered for our offences, and was raised again for our justification.
Romans 5:18
Therefore as by the offence of one judgment came upon all men to condemnation; even so by the righteousness of one the free gift came upon all men unto justification of life.