accelerator

Meanings

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

Synonyms

accelerator pedal, atom smasher, catalyst, gas, gas pedal, gun, particle accelerator, throttle, throttle valve