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

Examples of decelerate in a Sentence

she decelerated the car as we entered the school zone
Recent Examples on the Web Tesla shares on Thursday dipped below $150 a piece, relinquishing a year's worth of gains as the automaker struggles with decelerating electric vehicle sales and mounting competition. Kate Gibson, CBS News, 18 Apr. 2024 The magnetic field offers a glimpse of the planet’s interior and a snapshot of its history, hinting at how far the whirling insides have decelerated over billions of years, says Antonio Genova, an aerospace engineer who studies planetary geodesy and geophysics at the Sapienza University of Rome. Shi En Kim, Smithsonian Magazine, 16 Apr. 2024 In Latin America, the economies of Brazil and Mexico are expected to decelerate through 2025. Paul Wiseman, Quartz, 16 Apr. 2024 The airplane then began to decelerate with the thrust reversers but at a slower pace and the pilot indicated that the brakes were not working correctly, the report says. Nicole Lopez, Fort Worth Star-Telegram, 21 Mar. 2024 Inflation is decelerating, but 77% of Americans remain worried that prices will continue to increase in 2024. Bill Hardekopf, Forbes, 15 Feb. 2024 Hiring has decelerated, and the Labor Department reported Wednesday that job openings had fallen in November to the lowest level since March 2021. Paul Wiseman, Fortune, 3 Jan. 2024 Iran’s nuclear efforts are another weapon in its arsenal, and Tehran accelerates, decelerates, and even occasionally abandons its program in response to changing conditions. Jon B. Alterman, Foreign Affairs, 3 Apr. 2024 The latest numbers show an increasingly positive narrative: decelerating inflation, no recession in sight, and surprisingly strong job growth. Jacob Turcotte, The Christian Science Monitor, 2 Feb. 2024

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

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 25 Apr. 2024.

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

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