incandescence
noun
                                                                                                                            
                                                            in·can·des·cence
                    
                                                                                                              
                                                                                                                                  ˌin-kən-ˈde-sᵊn(t)s  
                                                                                                                              
             also  -(ˌ)kan-
                                                      
                                                          
                                
              
          
                                                      : the quality or state of being incandescent                                      
                
                                
            especially                
          
                                                      : emission by a hot body of radiation that makes it visible                                      
            
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  Merriam-Webster unabridged




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