ブラウザの設定でJava Scriptの使用を有効にしてご利用ください。
出典:Wiktionary
From galactography (“science of charting かつ mapping galaxies”) + -er. Coined by American science fiction author Edmond Hamilton in his 1965 novelette The Shores of Infinity.
galactographer (複数形 galactographers)
galactographer