Strong’s Greek
G2676 — katartisis
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
κατάρτισις
katartisis — pronounced kat-ar'-tis-is
from 2675; thorough equipment (subjectively):--perfection. see GREEK for 2675
1 occurrence in the KJV.
2 Corinthians 13:9
For we are glad, when we are weak, and ye are strong: and this also we wish, even your perfection.