cryptanalysis
noun
                                                                                                                            
                                                            crypt·anal·y·sis
                    
                                                                                                              
                                                                                                                                  ˌkrip-tə-ˈna-lə-səs 
                                                      
                                                          
            1
                    
                                          
              
          
                                                      : the solving of cryptograms or cryptographic systems                                      
                
                    
2
                    
                                          
              
          
                                                      : the theory of solving cryptograms or cryptographic systems : the art of devising methods for cryptanalysis                                      
                
                    
                                                      cryptanalytic
                        
                                      adjective
                                                                                                      
      
 or less commonly cryptanalytical    
                                                              Love words? Need even more definitions?
  
  Merriam-Webster unabridged




Share