# angular acceleration

- the time rate of change of angular velocity of a rotating body.

## Origin of angular acceleration^{}

First recorded in 1880–85

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# angular acceleration

- the rate of change of angular velocity
- astronautics the acceleration of a space vehicle around an axis

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# angular acceleration

[ăng′gyə-lər]

- The rate of change of angular velocity with respect to time. Angular acceleration is measured in revolutions per minute squared or in radians per second squared.

The American Heritage® Science Dictionary
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