de·riv·a·tive
                    
                                                                                                              
                                                                                                                                  di-ˈri-və-tiv 
                                                      
                                                          
            1
                    
                                linguistics 
                                  
              
          
                                                      : a word formed from another word or base : a word formed by derivation                                      
              
                             
"pointy," "pointed," and other derivatives of "point"
                         
                
                    2
                    
                                          
              
          
                                                      : something derived                                      
              
                             
… the sonata form (itself a derivative of opera) …—
Kingsley Martin
                                       the name "Mia" is a derivative of "Maria"
                         
                
                    3
                    
                                mathematics 
                                  
              
          
                                                      : the limit of the ratio of the change in a function to the corresponding change in its independent variable as the latter change approaches zero                                      
                
                    
4
                    
              
              
                chemistry      
          
      
        a
    
          
                                          
              
          
                                                      : a chemical substance related structurally to another substance and theoretically derivable from it                                      
                
                    
        b
    
          
                                          
              
          
                                                      : a substance that can be made from another substance                                      
              
                             
Petroleum is a derivative of coal tar.
                                       soybean derivatives
                         
                
                    5
                    
                                          
              
          
                                                      : a contract or security (see security sense 3) that derives its value from that of an underlying asset (such as another security) or from the value of a rate (as of interest or currency exchange) or index (see index entry 1 sense 1b) of asset value (such as a stock index)                                      
                
                    
1
                    
                                linguistics 
                                  
              
          
                                                      : formed from another word or base : formed by derivation                                      
              
                             
a derivative word
                         
                
                    2
                    
                                          
              
          
                                                      : having parts that originate from another source : made up of or marked by derived elements                                      
              
                             
a derivative philosophy
                         
                
                    3
                    
                                          
              
          
                                                      : lacking originality : banal                                      
              
                             
a derivative performance
                                       a film using a derivative plot device
                         
                
                    
                                                      derivatively
                                      adverb
                                                                            
    
                                                      derivativeness
                                      noun
                                                                            
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  Merriam-Webster unabridged




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