核かく反はん応のう炉ろMeaningsNoun1. nuclear reactorKanji used核nucleus反be against応respond with action炉furnaceComposed 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炉ろhearth; fireplace; furnace; kilnNoun