a fullness; abundance, plenty
Greek 'that which fills'
Thus she stands approved as his pleroma, as entirely filled with God.
The Church, which is his body, the pleroma of him that filleth all in all.
As the pleroma of him who filleth all in all, the Church harbors in her bosom a treasure, the richness of which is inexhaustible.
It is a "pleroma" in social life, a fulness of concord, a harmony of many parts.