銀河系内星雲 ぎんがけいないせいうん Meanings Noun galactic nebula See also: 星雲 (せいうん). Kanji 銀 silver. Read as ギン. 河 river 系 system. Read as ケイ. 内 inside. Read as ナイ. 星 star. Read as セイ. 雲 cloud. Read as ウン. Word lists Astronomy Jinuma: Japanese Dictionary · Word lists