宇う宙ちゅう大だい爆ばく発はつMeaningsNoun1. Big Bang (theory)Kanji used宇space宙midair大large爆explosion発let outComposed of宇う宙ちゅうuniverse; cosmos; spaceNoun大だいlarge; big; great; huge; vast; major; important; serious; severe; prominent; …Prefix爆ばく発はつexplosion; detonation; blast; blowing up; eruption; outburst (of emotion); explosion (e.g. of anger); eruption (e.g. of discontent)Noun