Meaning of the Sanskrit Word: prajapatyam

  prājāpatyam—to execute the vow for one year    SB 3.12.42
  prājāpatyam—of the great Prajāpati    SB 3.15.1
  prājāpatyām—Prājāpatya sacrifice    SB 1.15.39

Can't find any compound Sanskrit words containing prajapatyam.