Dictionary Results for accelerator
1. accelerator - noun · a pedal that controls the throttle valve; "he stepped on the gas" Synonym(s): accelerator_pedal, gas_pedal, gas, throttle, gun Hypernym(s): pedal, treadle, foot_pedal, foot_lever
2. accelerator - noun · a valve that regulates the supply of fuel to the engine Synonym(s): throttle, throttle_valve Hypernym(s): valve
3. accelerator - noun · (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected Synonym(s): catalyst Hypernym(s): activator
4. accelerator - noun · a scientific instrument that increases the kinetic energy of charged particles Synonym(s): particle_accelerator, atom_smasher Hypernym(s): scientific_instrument
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