Strong's Concordance

Original word: ἑδραίωμα
Transliteration: hedraióma
Definition (short): support
Definition (full): a support, a basis

NAS Exhaustive Concordance

Word Origin: from hedraios
Definition: a support, fig. a basis
NASB Translation: support (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
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Strong's Exhaustive Concordance

From a derivative of hedraios; a support, i.e. (figuratively) basis -- ground.

see GREEK hedraios

KJV: 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.
NASB: but in case I am delayed, I write so that you will know how one ought to conduct himself in the household of God, which is the church of the living God, the pillar and support of the truth.