Nearby Words
noun
1.
the act of accelerating; increase of speed or velocity.
2.
a change in velocity.
3.
Mechanics. the time rate of change of velocity with respect to magnitude or direction; the derivative of velocity with respect to time.
Related forms
non·ac·cel·er·a·tion, noun
o·ver·ac·cel·er·a·tion, noun
re·ac·cel·er·a·tion, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Acceleration
has a plethora of syllables.
So is supercalifragilisticexpialidocious. Does it mean:
| a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells. |
| (used as a nonsense word by children to express approval or to represent the longest word in English.) |
Collins
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
acceleration
1530s, from L. accelerationem (nom. acceleratio) "a hastening," from accelerare (see accelerate).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
acceleration  (āk-sěl'ə-rā'shən) Pronunciation Key
The rate of change of the velocity of a moving body. An increase in the magnitude of the velocity of a moving body (an increase in speed) is called a positive acceleration; a decrease in speed is called a negative acceleration. Acceleration, like velocity, is a vector quantity, so any change in the direction of a moving body is also an acceleration. A moving body that follows a curved path, even when its speed remains constant, is undergoing acceleration. See more at gravity, relativity. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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