# Definition:Derivative/Higher Derivatives/Order of Derivative

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## Definition

The **order** of a derivative is the **number of times it has been differentiated**.

For example:

- a first derivative is of
**first order**, or**order $1$** - a second derivative is of
**second order**, or**order $2$**

and so on.

## Also see

- Results about
**the order of a derivative**can be found**here**.

## Sources

- 2008: David Nelson:
*The Penguin Dictionary of Mathematics*(4th ed.) ... (previous) ... (next):**order**:**1.**(of a derivative)