Meaning

• One who, or that which, accelerates.

• A device for causing acceleration.

• A substance which speeds up chemical reactions.

• A pedal causing the vehicle to accelerate when it is pressed.

• A chemical that reduces development time.

• A device that accelerates charged subatomic particles.

• A muscle or nerve that speed the performance of an action.

• An accelerator key.

• A light van to take mails between a post office and a railway station.