ぎんがけいがいせいうん 銀河系外星雲 LinksSentence search for 銀河系外星雲Sentence search for ぎんがけいがいせいうんKanji details for 銀, 河, 系, 外, 星 and 雲Edit in JMdict Noun1. extragalactic nebulaAstronomy, Obsolete term, See also 銀河 Discussions Log in to talk about this word.