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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