外質！

Ectoplasma!

Source: Tatoeba

Sentence Composition

1 外 wài
  1. outside
  2. in addition
  3. foreign
  4. external
2 質 zhì
  1. character
  2. nature
  3. quality
  4. plain
  5. to pawn
  6. pledge
  7. hostage
  8. to question
  9. Taiwan pr. zhí