bicentenary
noun
                                                                                                                            
                                                            bi·cen·te·na·ry
                    
                                                                                                              
                                                                                                                                  ˌbī-(ˌ)sen-ˈte-nə-rē  
                                                                                                                              
            (ˌ)bī-ˈsen-tᵊn-ˌer-ē,
                                                                                                                              ˌbī-(ˌ)sen-ˈtē-nə-rē
                                                      
                                                          
                                                      bicentenary
                                      adjective
                                                                            
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  Merriam-Webster unabridged




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