addition

/əˈdɪʃən/

nounad · di · tion

Think: “Add it on” sounds like ad-di-tion—because an addition is something you add on.

Yes, it's addition. The tricky part is the ending: it’s **-tion** (sounds like “shun”), not **-sion** or **-shun**.

Definitions

  1. nounthe act or process of adding numbers, amounts, or items together
  2. nounsomething that is added; an extra part or amount
  3. nounan improvement or new part added to a building, group, or collection

Examples

  • “We practiced addition and subtraction during math class.”
  • “In addition to milk, we need eggs and bread.”
  • “The new addition to the library includes a quiet study room.”

Synonyms

sumincreaseextraappendagesupplement

Antonyms

subtraction

Translations

ES adiciónPT adiçãoFR addition

Common misspellings

aditionaddtionaddishunaddisionadissionaddittionadditíon

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