additive additive /ˈædətɪv/

adjective

1. Characterized or produced by addition  ( additive )
   characterized or produced by addition
    An additive process
   an additive process
   
2. (mathematics) designating or involving an equation whose terms are of the first degree  ( additive , linear )
   (mathematics) designating or involving an equation whose terms are of the first degree
   

noun

1. () Something added to enhance food, gasoline, paint or medicine  ( additive )
   something added to enhance food, gasoline, paint or medicine
     The food additive enhances the flavor of the dish.
   The food additive enhances the flavor of the dish.