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English definition of “accelerator”

accelerator

noun [C]     /əkˈsel.ə.reɪ.tər/ US  /-ɚ.eɪ.t̬ɚ/
the pedal (= a part that you push with your foot) in a vehicle that makes it go fasterThe interior of vehicles specialized physics in physics, a machine that makes particles (= small pieces of matter) move very fastGenerating and pumping devices
(Definition of accelerator noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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