accelerator

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noun ac·cel·er·a·tor \ik-ˈse-lə-ˌrā-tər, ak-\

Definition of accelerator

  1. :  one that accelerates: such asa :  a muscle or nerve that speeds the performance of an actionb :  a device (such as a pedal) for controlling the speed of a motor vehicle enginec :  a substance that speeds a chemical reactiond :  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

Recent Examples of accelerator from the Web

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

Origin and Etymology of accelerator

accelerate + 1-or


ACCELERATOR Defined for English Language Learners

accelerator

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noun

Definition of accelerator for English Language Learners

  • : a pedal in a vehicle that is pressed down to make the vehicle go faster

  • : a machine that causes charged particles (such as electrons and protons) to move at extremely high speeds


ACCELERATOR Defined for Kids

accelerator

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noun ac·cel·er·a·tor \ak-ˈse-lə-ˌrā-tər\

Definition of accelerator for Students

  1. :  a pedal in an automobile for controlling the speed of the motor


Medical Dictionary

accelerator

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noun ac·cel·er·a·tor \ik-ˈsel-ə-ˌrāt-ər, ak-\

Medical Definition of accelerator

  1. :  one that accelerates: asa:  a muscle or nerve that speeds the performance of an action a cardiac acceleratorb:  a substance that speeds a chemical reactionc:  an apparatus for imparting high velocities to charged particles (as electrons)



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