accelerator
/ɪkˈsɛləˌreɪtɚ/
noun
plural
accelerators
plural
accelerators
Britannica Dictionary definition of ACCELERATOR
[count]
1
:
a pedal in a vehicle that is pressed down to make the vehicle go faster
— called also
(US)
gas pedal
—
see picture at car
2
technical
:
a machine that causes charged particles (such as electrons and protons) to move at extremely high speeds