decelerate

verb

de·​cel·​er·​ate (ˌ)dē-ˈse-lə-ˌrāt How to pronounce decelerate (audio)
decelerated; decelerating

transitive verb

1
: to reduce the speed of : slow down
decelerate a car
2
: to decrease the rate of progress of
decelerate growth
decelerate soil erosion

intransitive verb

: to move at decreasing speed
deceleration noun
decelerator noun

Example Sentences

she decelerated the car as we entered the school zone
Recent Examples on the Web But this drift can decelerate or even reverse if the gas pressure in the disk increases locally. Theo Nicitopoulos, Discover Magazine, 21 Jan. 2022 So, the question then becomes what causes these particles to decelerate. John Timmer, Ars Technica, 23 Nov. 2022 Duplay and co are quick to point out that the spacecraft also has to decelerate on reaching the Red Planet. The Physics Arxiv Blog, Discover Magazine, 24 Feb. 2022 Year-over-year home-price growth has slowed from the record pace of more than 20% reached in March, and economists expect price growth to continue to decelerate this year. Nicole Friedman, WSJ, 25 Oct. 2022 Overall prices, including food and fuel, rose 8.2% last month from a year ago, showing prices continue to decelerate, albeit slowly. Irina Ivanova, CBS News, 13 Oct. 2022 That involves applying just the right pressure to the brake pedal, and varying that pressure based on the feel that pedal delivers, to decelerate a vehicle just on the edge of locking its tires. Wes Siler, Outside Online, 18 Jan. 2020 But Wall Street estimates show that loan growth is expected to decelerate in Q4 and into next year. Nicole Goodkind, CNN, 13 Oct. 2022 The Fed will want to cool down the inflationary cycle if wage growth doesn’t decelerate. Paolo Confino, Fortune, 6 Sep. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'decelerate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

de- + accelerate

First Known Use

1899, in the meaning defined at transitive sense 1

Time Traveler
The first known use of decelerate was in 1899

Dictionary Entries Near decelerate

Cite this Entry

“Decelerate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/decelerate. Accessed 27 Jan. 2023.

Kids Definition

decelerate

verb
de·​cel·​er·​ate (ˈ)dē-ˈsel-ə-ˌrāt How to pronounce decelerate (audio)
decelerated; decelerating
: to move or cause to move at decreasing speed : slow down
deceleration noun

Medical Definition

decelerate

verb
de·​cel·​er·​ate (ˈ)dē-ˈsel-ə-ˌrāt How to pronounce decelerate (audio)
decelerated; decelerating

transitive verb

: to reduce the speed of : slow down

intransitive verb

: to move at decreasing speed
deceleration noun

More from Merriam-Webster on decelerate

Last Updated: - Updated example sentences
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