Meaning of the Sanskrit Word: avasisyate

  avaśiṣyate—is remaining.    Madhya 8.72, Iso Invocation
  avaśiṣyate—remains to be known.    Bg 7.2
  avaśiṣyate—remains to be done.    SB 9.5.16

Can't find any compound Sanskrit words containing avasisyate.