stereophonic
adjective
                                                                                                                            
                                                            ste·reo·phon·ic
                    
                                                                                                              
                                                                                                                                  ˌster-ē-ə-ˈfä-nik  
                                                                                                                              
            ˌstir-
                                                      
                                                          
                                
              
          
                                                      : of, relating to, or constituting sound reproduction involving the use of separated microphones and two transmission channels to achieve the sound separation of a live hearing                                      
                
                    
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  Merriam-Webster unabridged




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