Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun accelerator

4 senses of accelerator

Sense 1
accelerator, accelerator pedal, gas pedal, gas, throttle, gun -- (a pedal that controls the throttle valve; "he stepped on the gas")
       => pedal, treadle, foot pedal, foot lever -- (a lever that is operated with the foot)

Sense 2
accelerator, throttle, throttle valve -- (a valve that regulates the supply of fuel to the engine)
       => valve -- (control consisting of a mechanical device for controlling the flow of a fluid)

Sense 3
catalyst, accelerator -- ((chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected)
       => activator -- ((biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription)

Sense 4
accelerator, particle accelerator, atom smasher -- (a scientific instrument that increases the kinetic energy of charged particles)
       => scientific instrument -- (an instrument used by scientists)