# angular acceleration

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

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## Origin of angular acceleration^{}

First recorded in 1880–85

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## angular acceleration

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

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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## 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.

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The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.