| accelerator | a valve that regulates the supply of fuel to the engine |
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| accelerator | a scientific instrument that increases the kinetic energy of charged particles |
| accelerator | a pedal that controls the throttle valve |
| accelerator | (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected |
| accelerator | a coagulation factor |
| accelerator | a pedal that controls the throttle valve |
| accelerator | tending to increase velocity |