# Definition:Summand/Also known as

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## Summand: Also known as

The word **addend** appears to mean the same thing as **summand**, such that the two words may be used interchangeably.

The word **term** is frequently seen for **summand**, but **term** also has other meanings.

If it is important to avoid ambiguity then it is recommended that **summand** is used.

The term **augend** can sometimes be seen for (specifically) the first of a pair of **summands**, so in the context of $a + b = c$:

In the context of **summations**, the **summand** is also known as the **set of summands**.

## Sources

- 1989: Ephraim J. Borowski and Jonathan M. Borwein:
*Dictionary of Mathematics*... (previous) ... (next):**addend** - 1998: David Nelson:
*The Penguin Dictionary of Mathematics*(2nd ed.) ... (previous) ... (next):**addend** - 1998: David Nelson:
*The Penguin Dictionary of Mathematics*(2nd ed.) ... (previous) ... (next):**augend** - 2008: David Nelson:
*The Penguin Dictionary of Mathematics*(4th ed.) ... (previous) ... (next):**addend** - 2008: David Nelson:
*The Penguin Dictionary of Mathematics*(4th ed.) ... (previous) ... (next):**augend** - 2021: Richard Earl and James Nicholson:
*The Concise Oxford Dictionary of Mathematics*(6th ed.) ... (previous) ... (next):**addend**