Strong's G4954 — σύσσωμος (adjective)
sussomos (soos'-so-mos) adj.
1. of a joint body
2. (figuratively) a fellow-member of the Christian community
[from G4862 and G4983]
KJV: of the same body 
Root(s): G4862, G4983 
Hebrew root: σῶμα
Occurrences: 1