Strong's G4138 — πλήρωμα (noun)
pleroma (play'-ro-mah) n.
1. repletion or completion
2. (subjectively) what fills (as contents, supplement, copiousness, multitude)
3. (objectively) what is filled (as container, performance, period)
[from G4137]
KJV: which is put in to fill up, piece that filled up, fulfilling, full, fulness 
Root(s): G4137 
Hebrew root: πληρόω
Occurrences: 17