accelerator
noun
ac·cel·er·a·tor
ik-ˈse-lə-ˌrā-tər 
ak-
plural accelerators
: one that accelerates: such as
a
: a muscle or nerve that speeds the performance of an action
b
: a device (such as a gas pedal) for increasing the speed of a motor vehicle engine
c
: a substance that speeds a chemical reaction
d
: an apparatus for imparting high velocities to charged particles (such as electrons)
e
: an item of computer hardware that increases the speed at which a program or function operates
a graphics accelerator
Examples of accelerator in a Sentence
Recent Examples on the Web
The real question is where 750,000 frontier accelerators that were nominally reserved for Chinese buyers end up in a world that has been compute-constrained for two years.
—
Jon Markman, Forbes.com, 18 May 2026
Teaching the accelerator to tune itself Earlier particle physics facilities, including Brookhaven’s own Relativistic Heavy Ion Collider, which shut down in February 2026, incorporated AI tools years after construction.
—Deena Theresa, Interesting Engineering, 18 May 2026
Ease off the accelerator - Step off the gas to slow down the vehicle until the tires find traction.
—Kansas City Star Weather Bot, Kansas City Star, 18 May 2026
Sergeant Ryan Fox of the Ohio State Highway Patrol said the accelerator pedal was at 100% and had been completely pressed all the way down leading up to the crash.
—Katie Mather, PEOPLE, 18 May 2026
See All Example Sentences for accelerator
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Jon Markman, Forbes.com, 18 May 2026
Teaching the accelerator to tune itself Earlier particle physics facilities, including Brookhaven’s own Relativistic Heavy Ion Collider, which shut down in February 2026, incorporated AI tools years after construction.
—Deena Theresa, Interesting Engineering, 18 May 2026
Ease off the accelerator - Step off the gas to slow down the vehicle until the tires find traction.
—Kansas City Star Weather Bot, Kansas City Star, 18 May 2026
Sergeant Ryan Fox of the Ohio State Highway Patrol said the accelerator pedal was at 100% and had been completely pressed all the way down leading up to the crash.
—Katie Mather, PEOPLE, 18 May 2026
See All Example Sentences for accelerator
Cite this Entry
“Accelerator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/accelerator. Accessed 21 May. 2026.
Copy CitationKids Definition
accelerator
noun
ac·cel·er·a·tor
ik-ˈsel-ə-ˌrāt-ər
ak-
1
: one that accelerates
2
: a device (as a pedal) in a motor vehicle used to control the speed of the motor
3
: a device that is used to give high velocities to charged particles (as electrons and protons)
Medical Definition
accelerator
noun
ac·cel·er·a·tor
ik-ˈsel-ə-ˌrāt-ər, ak-
: one that accelerates: as
a
: a muscle or nerve that speeds the performance of an action
a cardiac accelerator
b
: a substance that speeds a chemical reaction
c
: an apparatus for imparting high velocities to charged particles (as electrons)
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