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 biggest winner was the data center division, which made $3.9 billion thanks to Epyc server processors and Instinct AI accelerators, and Ryzen CPUs are also selling well, helping the company's client segment earn $2.3 billion. —Ars Technica, 5 Feb. 2025

Rather than focusing on deportations efforts, the incoming administration should consider investing in this group through incubator programs, accelerators and potentiate this demographic in the interest of the average U.S. voter. —London School Of Economics, Forbes, 22 Jan. 2025

Starting in October 2022, the Department of Commerce’s Bureau of Industry and Security (BIS) intensified these controls, initially restricting the sale of top GPUs, such as Nvidia’s A100 and H100 chips, along with other AI accelerators, to China. —Colin H. Kahl, Foreign Affairs, 17 Jan. 2025

The laboratory houses the Stanford Linear Accelerator, which at 2 miles long remains the longest such accelerator in the world. —Robert Salonga, The Mercury News, 7 Jan. 2025

Word History

Etymology

accelerate + -or entry 1

First Known Use

1611, in the meaning defined above

Phrases Containing accelerator

• accelerator mass spectrometry
• linear accelerator
• particle accelerator

Kids 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)