metallurgy
noun
                                                                                                                            
                                                            met·al·lur·gy
                    
                                                                                                              
                                                                                                                                  ˈme-tə-ˌlər-jē  
                                                                                                                              
             especially British  mə-ˈta-lə-
                                                      
                                                          
                                
              
          
                                                      : the science and technology of metals                                      
                
                    
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  Merriam-Webster unabridged




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