Accelerator

The word accelerator, when used alone, has several possible meanings.

• A particle accelerator in physics.
• An accelerator to speed a function in computer hardware.
• Usually in the UK, and sometimes in the US, the pedal (often called the gas pedal in the US) that controls the engine speed of an automobile.
• A substance that increases the rate of a chemical reaction, such as the curing of an adhesive.