Lexical Definition

‎συναρμολογέω‎ synarmologéō (soon-ar-mol-og-eh'-o) to join ^G:V
from ‎σύν‎ and a derivative of a compound of ‎ἁρμός‎ and ‎λέγω‎ (in its original sense of laying)

be fitly framed (joined) together.

• to render close-jointed together, i.e. organize compactly

Abbott-Smith

*† συν-αρμολογέω, -ῶ (< ἁρμός, λέγω), = cl. συναρμόζω,
to fit or frame together: of the parts of a building, Eph 2:21; of the members of the body, Eph 4:16 (Eccl.).†

Abbott-Smith References

Liddell-Scott-Jones

συναρμολογέω,

compagino, [Refs]:—passive, to be fitted or framed together, [NT]

_{LSJ Scripture Refs: Eph.2.21}