Meaning of the Sanskrit Word: parasarat

  parāśarāt—by Parāśara Muni    SB 1.3.21
  parāśarāt—by Parāśara    SB 1.4.14
  parāśarāt—by the semen of Parāśara Muni    SB 9.22.21-24

Can't find any compound Sanskrit words containing parasarat.