2
                    
        a
    
          
                                          
              
          
                                                      : rise, beginning, or derivation from a source                                      
              
                             
the origin of life on Earth
                                       The word "algebra" is of Arabic origin.
                         
                
                    
        b
    
          
                                          
              
          
                                                      : the point at which something begins or rises or from which it derives                                      
              
                             
the origin of the custom
                         
                
                                
            also                
          
                                                      : something that creates, causes, or gives rise to another                                       
              
                             
            a spring is the origin of the brook    
                         
            3
                    
                                          
              
          
                                                      : the more fixed, central, or larger attachment of a muscle                                      
                
                    
4
                    
                                          
              
          
                                                      : the intersection of coordinate axes                                      
                
                    
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  Merriam-Webster unabridged




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