addend

American  

[ad-end, uh-dend] / ˈæd ɛnd, əˈdɛnd /

noun

Mathematics.

1. any of a group of numbers or terms added together to form a sum.

2. (formerly) a number that is added to another in forming a sum.

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addend British  

/ ˈædɛnd, əˈdɛnd /

noun

1. any of a set of numbers that is to be added Compare sum 1

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addend Scientific  

/ ăd′ĕnd′ /

1. A number that is added to another number.

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Etymology

Origin of addend

First recorded in 1905–10; shortening of addendum

Explanation

Addend is a math term for any number that's added to another. If you add 10 to 15, then 10 is the addend. You can also call an addend a summand. When it comes to addition, the numbers you're working with are addends—the equivalent in multiplication would be called factors. If you're adding 7 to 112, the 7 is an addend and the second number is officially called an augend, although you'll rarely hear anyone except a math teacher use either of these terms. The Latin root of addend is addere, "to add to, join, or attach."