#addition  the act of adding one thing to another; "the addition of flowers created a pleasing effect"; "the addition of a leap day every four years"
  exclusion:  #subtraction
  supertype:  #step-up__increase  the act of increasing something; "he gave me an increase in salary"
  subtype:  #retrofit  the act of adding a component or accessory to something that did not have it when it was manufactured; "the court ordered a retrofit on all automobiles"
  subtype:  #fluoridation__fluoridization__fluoridisation  the addition of a fluoride to the water supply (to prevent dental decay)

No statement uses or specializes #addition; click here to add one.