superbomb
noun
                                                                                                                            
                                                            su·per·bomb
                    
                                                                                                              
                                                                                                                                  ˌsü-pər-ˈbäm  
                                                      
                                                          
            
            
               plural superbombs            
        
    
                                
              
          
                                                      : an extremely powerful bomb                                      
                
                                
            specifically                
          
                                                      : hydrogen bomb                                       
              
                             
            In July 1941 the committee reported that a superbomb could be made with isotopically separated uranium-235.    — Robert L. Weber
Robert L. Weber          
                         
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  Merriam-Webster unabridged




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