四よん大だい発はつ明めいMeaningsNoun1. Four Great Inventions (of China: the compass, gunpowder, papermaking and printing) (Historical)Kanji used四four大large発let out明brightComposed of四よんfour; 4Numeric大だいlarge; big; great; huge; vast; major; important; serious; severe; prominent; …Prefix発はつ明めいinventionNoun