The literal translation. Rev. renders loss. Referring apparently to the diminution in numbers of the Jewish people. Other explanations are defeat, impoverishment, injury, minority.
Fullness (πλήρωμα)
See on Joh 1:16. The word may mean that with which anything is filled (1Co 10:26, 1Co 10:28; Mat 9:16; Mar 6:43); that which is filled (Eph 1:23); possibly the act of filling (Rom 13:10), though this is doubtful. Here in the first sense: the fullness of their number contrasted with the diminution. They will belong as an integral whole to the people of God.