superaddition

/ˌsupərəˈdɪʃən/
noun
  1. Something that is added to something already complete; an extra addition.
    • The superaddition of a swimming pool made the house even more attractive.
    • The new wing was a superaddition to the original hospital building.
    • Her speech was a superaddition to the scheduled program.
What does "superaddition" mean? | whatsthatwordmean | whatsthatwordmean