Strong’s Greek
G5050 — teleiosis
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
τελείωσις
teleiosis — pronounced tel-i'-o-sis
from 5448; (the act) completion, i.e. (of prophecy) verification, or (of expiation) absolution:--perfection, performance. see GREEK for 5448
1 occurrence in the KJV.
Luke 1:45
And blessed is she that believed: for there shall be a performance of those things which were told her from the Lord.