accent mark
noun
1
                    
        a
    
          
        b
    
          2
                    
        a
    
          
                                          
              
          
                                                      : a symbol used to indicate musical stress                                      
                
                    
        b
    
          
                                          
              
          
                                                      : a mark placed after a letter designating a note of music to indicate in which octave the note occurs                                      
                
                    
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  Merriam-Webster unabridged




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