accelerator
//əkˈsɛləˌreɪtər//
Noun
acceleratorSingular
acceleratorsPlural
1
A pedal or device in a vehicle that controls the speed by regulating the flow of fuel to the engine.
She pressed the accelerator to overtake the truck.
2
A substance or device that speeds up a process or reaction.
This chemical acts as an accelerator in the curing process.
3
A physics apparatus that accelerates charged particles to high speeds, used in research.
Scientists use a particle accelerator to study the fundamental building blocks of matter.