Meaning of the Sanskrit Word: rajamsi

  rajäàsi—the atoms    SB 8.23.29, Madhya 24.21
  rajäàsi—particles    SB 2.7.40
  rajäàsi—particles of dust    SB 4.11.20
  rajäàsi—atoms    Madhya 21.15

Can't find any compound Sanskrit words containing rajamsi.