Japanese edit

Kanji in this term
あん
Grade: 3
こく
Grade: 2
せい
Grade: 2
うん
Grade: 2
on’yomi
Alternative spelling
暗黑星雲 (kyūjitai)

Etymology edit

Compound of 暗黒 (ankoku, darkness) and 星雲 (seiun, nebula).

Noun edit

(あん)(こく)(せい)(うん) (ankoku seiun

  1. a type of interstellar cloud that is so dense that it obscures light from background stars; a dark nebula