Meaning of the Sanskrit Word: prajapatinam

  prajāpatīnām—of all the forefathers of living entities    SB 2.6.35
  prajāpatīnām—of the Prajāpatis    SB 4.3.2
  prajāpatīnām—of all the Prajāpatis    SB 8.17.28

Can't find any compound Sanskrit words containing prajapatinam.