bizonal
adjective
                                                                                                                            
                                                            bi·zon·al
                    
                                                                                                              
                                                                                                                                  (ˌ)bī-ˈzō-nᵊl  
                                                      
                                                          
            
                                
              
          
                                                      : of or relating to the affairs of a zone governed or administered by two powers acting together                                      
                
                    
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  Merriam-Webster unabridged




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