Anything that compares to the extremity of a nuclear explosion or power produced from nuclear energy. Anything that is desribed as being nuclear, the awesomeness level or epicness is at the max.! Nothing is more awesome or intense. An idea invented that would create great results would be considered nuclear!
Anything that compares to being epic! That song played at the party was nuclear! It got the whole place popping! That movie was nuclear, not one person could stop laughing!