Meaning of the Sanskrit Word: pranasya

  prāṇasya—of the vital energy    SB 3.26.31
  prāṇasya—of vital air    SB 3.28.9
  prāṇasya—of Prāna    SB 6.6.12
  prāṇasya—of life    SB 8.2.31

Can't find any compound Sanskrit words containing pranasya.