acceleration

noun

ac·​cel·​er·​a·​tion ik-ˌse-lə-ˈrā-shən 

(ˌ)ak-

1

a

: the act or process of moving faster or happening more quickly : the act or process of accelerating

rapid acceleration

the acceleration of economic growth

b

: ability to accelerate

a car with good acceleration

2

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

While Beijing has never disclosed the size of its nuclear arsenal, Chinese leader Xi Jinping last year ordered the acceleration of strategic deterrence force development, as the military conducted a rare test launch of a nuclear-capable intercontinental ballistic missile (ICBM). —Ryan Chan, MSNBC Newsweek, 17 June 2025

The rapid acceleration of prior plans further signals that Beijing is prioritizing the development of homemade chips in response to Washington’s curbs on its access to high-end technology. —Prashant Rao, semafor.com, 17 June 2025

Banks that delay modernization are facing a growing list of challenges, including: • Explosion In Digital Transactions: The rapid acceleration of digital banking demands seamless, real-time processing. —Rodrigo Silva, Forbes.com, 16 June 2025

Lauder cited the acceleration of the pace of business for the need to have a future vision. —Pete Born, Footwear News, 15 June 2025

Word History

Etymology

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

Phrases Containing acceleration

• acceleration of gravity
• acceleration principle
• angular acceleration

Rhymes for acceleration

• abbreviation
• abomination
• accentuation
• accommodation
• accreditation
• acculturation
• accumulation
• acetylation
• adjudication
• administration
• adulteration
• affiliation

Kids Definition

acceleration

noun

ac·​cel·​er·​a·​tion ik-ˌsel-ə-ˈrā-shən 

ak-

1

: the act or process of accelerating : the state of being accelerated

2

: the rate of change of velocity with respect to time

also : change in velocity

Medical Definition

acceleration

noun

ac·​cel·​er·​a·​tion ik-ˌsel-ə-ˈrā-shən, (ˌ)ak- 

1

: the act or process of accelerating : the state of being accelerated

2

: change of velocity

also : the rate of this change

3

: advancement in mental growth or achievement beyond the average for one's age