accelerator Meaning, Definition & Usage

  1. noun a pedal that controls the throttle valve
    gas pedal; throttle; accelerator pedal; gas; gun.
    • he stepped on the gas
  2. noun a valve that regulates the supply of fuel to the engine
    throttle valve; throttle.
  3. noun (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
    catalyst.
  4. noun a scientific instrument that increases the kinetic energy of charged particles
    atom smasher; particle accelerator.

WordNet


Ac*cel"er*a`tor noun
Definitions
  1. One who, or that which, accelerates. Also as an adj.; as, accelerator nerves.

Webster 1913