核かく反はん応のうMeaningsNoun1. nuclear reactionKanji used核nucleus反be against応respond with actionPitch accentかくはんのうComposed of核かくstone (of a fruit); pit; pip; core (of an organization, team, etc.); nucleus; heart; nuclear weapons; nucleus (of an atom); nucleus (of a cell); condensation nucleus; …Noun反はん応のうreaction; response; physical reaction (to a stimulus); observable response (of an organism); effect; changeNoun