ac·​cel·​er·​a·​tion ik-ˌse-lə-ˈrā-shən How to pronounce acceleration (audio)
: the act or process of moving faster or happening more quickly : the act or process of accelerating
rapid acceleration
the acceleration of economic growth
: ability to accelerate
a car with good acceleration
physics : the rate of change of velocity with respect to time
broadly : change of velocity

Examples of acceleration in a Sentence

The car delivers quick acceleration. There has been some acceleration in economic growth. There has been an acceleration in economic growth.
Recent Examples on the Web The 0-to-60 miles per hour acceleration standard is achieved in 5.8 seconds. James Raia, The Mercury News, 4 June 2024 When later recombined, the interference patterns of the multiple wave packets are studied to discover even the most minuscule accelerations—tinier than conventional accelerometers could measure—to the wave packets’ positions in three-dimensional space. IEEE Spectrum, 3 June 2024 Since NPUs are currently at the ~40 TOPS performance mark and Nvidia’s PC GPUs can handle more than 1,000 TOPS for AI acceleration, there are clearly some big differences in performance for developers to think about here. Tom Warren, The Verge, 2 June 2024 Yet these changes, although understandable, are accelerations, not shifts. Aluf Benn, Foreign Affairs, 7 Feb. 2024 See all Example Sentences for acceleration 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'acceleration.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


borrowed from Anglo-French & Latin; Anglo-French acceleratiun, borrowed from Latin accelerātiōn-, accelerātiō, from accelerāre "to accelerate" + -tiōn-, -tiō, suffix of action nouns

First Known Use

15th century, in the meaning defined at sense 1a

Time Traveler
The first known use of acceleration was in the 15th century

Dictionary Entries Near acceleration

Cite this Entry

“Acceleration.” Dictionary, Merriam-Webster, Accessed 19 Jun. 2024.

Kids Definition


ac·​cel·​er·​a·​tion ik-ˌsel-ə-ˈrā-shən How to pronounce acceleration (audio)
: the act or process of accelerating : the state of being accelerated
: the rate of change of velocity with respect to time
also : change in velocity

Medical Definition


ac·​cel·​er·​a·​tion ik-ˌsel-ə-ˈrā-shən, (ˌ)ak- How to pronounce acceleration (audio)
: the act or process of accelerating : the state of being accelerated
: change of velocity
also : the rate of this change
: advancement in mental growth or achievement beyond the average for one's age
Last Updated: - Updated example sentences
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