# Definition:Radicand

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## Definition

Let $\sqrt [n] P$ denote the $n$th root of an expression.

Then $P$ is the **radicand** of $\sqrt [n] P$.

That is, it is **the object whose $n$th root is to be taken**.

## Linguistic Note

The word **radicand** comes from:

- the word
**radical**, itself deriving from the Latin**radix**meaning**root** - the suffix
**-and**, originating from the Latin gerundive form, loosely meaning**that which needs to be ...**

That is, **radicand** literally means **that which needs to have its root extracted**.

## Sources

- 1989: Ephraim J. Borowski and Jonathan M. Borwein:
*Dictionary of Mathematics*... (previous) ... (next): Entry:**radicand**