銀ぎん河が系けい内ない星せい雲うんぎんがけいないせいうんじ字FuriganaMeanings1noungalactic nebulaobsolete termastronomy›Obsolete astronomical term for a nebula within the Milky Way galaxy. Modern astronomy prefers more specific classifications.See also: 星雲銀ぎん河が系けい内