Meaning of the Sanskrit Word: avatatara

  avatatāra—descended    SB 4.16.2, SB 5.17.1, SB 6.18.9
  avatatāra—descended.    SB 5.1.7
  avatatāra—appeared as an incarnation.    SB 5.3.20
  avatatāra—has descended    Madhya 11.47

Can't find any compound Sanskrit words containing avatatara.