Meaning of the Sanskrit Word: samsrtim

  samsrtim—material existence    SB 1.5.19, SB-4.21.32
  samsrtim—in the hurdle of birth and death    SB 1.1.14
  samsrtim—to repeated birth and death    SB 3.31.31
  samsrtim—in material existence.    SB 7.13.28
  samsrtim—prolongation of material existence    SB 9.19.20

Can't find any compound Sanskrit words containing samsrtim.