Meaning of the Sanskrit Word: vismapanam

  vismapanam—causing astonishment    SB 3.23.21
  vismapanam—wonderful    SB 3.2.12
  vismapanam—astonishing    SB 1.15.5
  vismapanam—even producing wonder    Madhya 21.100

Can't find any compound Sanskrit words containing vismapanam.