Meaning of the Sanskrit Word: prapitamahah

  prapitamahah—grandfather    Bg 11.39
  prapitamahah—the great-grandfather Vasistha    SB 9.1.19
  prapitamahah—Vasistha, who was known as the great-grandfather.    SB 9.13.6
  prapitamahah—(your) great-grandfather    SB 9.24.36

Can't find any compound Sanskrit words containing prapitamahah.