Strong’s Greek
G3637 — oktaemeros
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ὀκταήμερος
oktaemeros — pronounced ok-tah-ay'-mer-os
from 3638 and 2250; an eight-day old person or act:--the eighth day. see GREEK for 3638 see GREEK for 2250
1 occurrence in the KJV.
Philippians 3:5
Circumcised the eighth day, of the stock of Israel, of the tribe of Benjamin, an Hebrew of the Hebrews; as touching the law, a Pharisee;