Strong’s Greek
G1477 — hedraioma
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἑδραίωμα
hedraioma — pronounced hed-rah'-yo-mah
from a derivative of 1476; a support, i.e. (figuratively) basis:--ground. see GREEK for 1476
1 occurrence in the KJV.
1 Timothy 3:15
But if I tarry long, that thou mayest know how thou oughtest to behave thyself in the house of God, which is the church of the living God, the pillar and ground of the truth.