accelerate

verb
ac·​cel·​er·​ate | \ -lə-ˌrāt How to pronounce accelerate (audio) \
accelerated; accelerating

Definition of accelerate

intransitive verb

1 : to move faster : to gain speed The car slowly accelerated. The pace of change has accelerated in recent months.
2 : to progress from grade to grade more rapidly than usual : to follow a speeded-up educational program

transitive verb

1 : to bring about at an earlier time Circumstances accelerated their departure.
2 : to cause to move faster accelerated his steps also : to cause to undergo acceleration
3a : to hasten the progress or development of accelerate our efforts
b : increase accelerate food production
4a : to enable (a student) to complete a course in less than usual time
b : to speed up (something, such as a course of study)

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Examples of accelerate in a Sentence

She stepped on the gas and the car accelerated. The plane accelerated down the runway. She stepped on the gas and accelerated the car. He says that cutting taxes will help to accelerate economic growth. The rate of economic growth has continued to accelerate.
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Recent Examples on the Web

People with other illnesses wanted to know why approval times could not be accelerated for their medical conditions. Jeffrey M. Drazen, BostonGlobe.com, "How drug ads drive up health care costs," 13 Aug. 2019 Some Indian analysts say Mr. Modi might have accelerated the move because of remarks made by Mr. Trump after his meeting last month with Prime Minister Imran Khan of Pakistan. New York Times, "Waning of American Power? Trump Struggles With an Asia in Crisis," 13 Aug. 2019 Barring action on a sweeping scale, the report said, climate change will accelerate the danger of severe food shortages. Christopher Flavelle, SFChronicle.com, "U.N.: Climate change worsens threat to world’s food supply," 8 Aug. 2019 Deforestation in the Amazon has accelerated 40 percent in the last year, Nobre said in a press conference. Stephen Leahy, National Geographic, "World food crisis looms if carbon emissions go unchecked, UN says," 8 Aug. 2019 The heat wave that smashed high temperature records in five European countries a week ago is now over Greenland, accelerating the melting of the island's ice sheet and causing massive ice loss in the Arctic. David Rising, courant.com, "Walloped by heat wave, Greenland sees massive ice melt," 2 Aug. 2019 Heck said Michaels’ being under the influence was not a contributing factor to the Thompson family’s deaths and that Michaels allegedly accelerated into the family’s car. Harriet Sokmensuer, PEOPLE.com, "Woman Allegedly Killed a Family by Intentionally Driving Into Them Because Husband Was Leaving Her," 22 July 2019 How Going Back to the Moon Helps: NASA believes new moon missions will accelerate a mission to Mars by speeding up the development of technologies needed to get there. Anatoly Zak, Popular Mechanics, "6 Challenges We Need To Conquer on Our Way to Mars," 22 July 2019 Scientists on the Intergovernmental Panel on Climate Change say that without dramatic action, global warming will dramatically accelerate weather hazards such as floods and heat waves, and cause mass global disruptions and death. Scott Dance, baltimoresun.com, "Critics fault Maryland Gov. Hogan’s plan for cutting greenhouse gases as late, lax," 19 July 2019

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

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First Known Use of accelerate

circa 1522, in the meaning defined at transitive sense 1

History and Etymology for accelerate

borrowed from Latin accelerātus, past participle of accelerāre "to add speed to, hasten the occurrence of, go quickly," from ad- ad- + celerāre "to hasten," verbal derivative of celer "swift, speedy," perhaps going back to *keli-li-/ri-, derivative from the Indo-European base of Greek kélomai, kelésthai "urge, exhort," kelēt-, kélēs "swift horse, charger"

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More Definitions for accelerate

accelerate

verb
ac·​cel·​er·​ate | \ ak-ˈse-lə-ˌrāt How to pronounce accelerate (audio) \
accelerated; accelerating

Kids Definition of accelerate

1 : to move or cause to move faster The car accelerated going downhill.
2 : to cause to happen more quickly Using plant food accelerates growth.

accelerate

verb
ac·​cel·​er·​ate | \ ik-ˈsel-ə-ˌrāt, ak- How to pronounce accelerate (audio) \
accelerated; accelerating

Medical Definition of accelerate

transitive verb

: to cause to move faster or speed up accelerated speech and motor activity in manic patients also : to cause to undergo acceleration