Meaning of the Sanskrit Word: manvantarani

  manvantarani—periods of Manu    SB 8.14.11
  manvantarani—different advents of Manus    SB 3.10.30
  manvantarani—all about the periods of the various Manus    SB 9.1.1
  manvantarani—reign of the Manus    SB 2.10.4

Can't find any compound Sanskrit words containing manvantarani.