Meaning of the Sanskrit Word: prajapatin

  prajapatin—the Prajapatis    SB 2.3.2-7, SB 3.20.9
  prajapatin—fathers of the living entities    SB 3.7.25
  prajapatin—to the great demigods entrusted with increasing the population    SB 7.10.32
  prajapatin—the various Prajapatis, who had given birth to all living entities    SB 8.20.24

Can't find any compound Sanskrit words containing prajapatin.