ret·ro·grade
                    
                                                                                                              
                                                                                                                                  ˈre-trə-ˌgrād  
                                                      
                                                          
            1
                    
        a(1)
    
                
                                          
              
          
                                                      : having or being motion in a direction contrary to that of the general motion of similar bodies and especially east to west among the stars                                      
              
                             
Saturn is retrograde for another week
                         
                
                    
        (2)
    
          
                                          
              
          
                                                      : having or being a direction of rotation or revolution that is clockwise as viewed from the north pole of the sky or a planet                                      
              
                             
a retrograde orbit
                         
                
                    
        b
    
          
                                          
              
          
                                                      : moving, occurring, or performed in a backward direction                                      
                
                    
        c
    
          
          
                                          
              
          
                                                      : occurring or performed in a direction opposite to the normal or forward direction of conduction or flow: such as                                      
                
                    
        (1)
    
                
                                          
              
          
                                                      : occurring along nerve cell processes toward the cell body                                      
              
                             
retrograde degeneration of nerve fibers
                         
              
                                                         compare anterograde sense 1a                                      
                
                    
        (2)
    
          
                                          
              
          
                                                      : occurring opposite to the normal direction or path of blood circulation                                      
              
                             
retrograde blood flow in veins with incompetent valves
                         
              
                                                         compare anterograde sense 1b                                      
                
                    
        d
    
          
                                          
              
          
                                                      : contrary to the normal order : inverse                                      
                
                    
2
                    
                                          
              
          
                                                      : tending toward or resulting in a worse or previous state                                      
                
                    
3
                    
                                archaic 
                                  
              
          
                                                      : contradictory, opposed                                      
                
                    
4
                    
                                          
              
          
                                                      : characterized by retrogression                                      
                
                    
5
                    
                                          
              
          
                                                      : affecting memories of a period prior to a precipitating event (such as brain injury or disease)                                      
              
                             
retrograde amnesia
                         
              
                                                         compare anterograde sense 2                                      
                
                    6
                    
                                          
              
          
                                                      : retro                                      
              
                             
retrograde fashion
                         
                
                    
                                                      retrogradely
                                      adverb
                                                                            
    
            
              retrograded; retrograding; retrogrades            
        
    
                      archaic 
                                  
              
          
                                                      : to turn back : reverse                                      
                
                    
1
                    
        a
    
          
                                          
              
          
                                                      : to go back : retreat                                      
                
                    
        b
    
          
                                          
              
          
                                                      : to go back over or recapitulate something                                      
                
                    
2
                    
                                          
              
          
                                                      : to decline to a worse condition                                      
                
                    
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  Merriam-Webster unabridged




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