accelerator

• First attested in 1611.
• (motor vehicle): First attested in 1900.
• accelerate +‎ -or

• (US) IPA^(key): /æk.ˈsɛl.ə.ˌɹeɪ.tɚ/, /æk.ˈsɛl.ə.ˌɹeɪt.ɚ/, /ɪk.ˈsɛl.ə.ˌɹeɪt.ɚ/

• Audio (US)

  (file)

accelerator (plural accelerators)

1. One who, or that which, accelerates.
2. A device for causing acceleration.
3. (chemistry) A substance which speeds up chemical reactions.
4. (vehicles) A pedal causing the vehicle to accelerate when it is pressed.
5. (photography) A chemical that reduces development time.
6. (physics) A device that accelerates charged subatomic particles.
7. (physiology, medicine) A muscle or nerve that speed the performance of an action.
8. (computing) An accelerator key.
   • 2002, Davis Howard Chapman, Sams Teach Yourself Visual C++ .NET in 21 Days (page 187)

     If they had allowed single-character accelerators, Windows wouldn't be able to determine whether the character was input or a shortcut.

9. (historical) A light van to take mails between a post office and a railway station.

(accelerator pedal):

• (North America) gas pedal, gas
• go pedal

(accelerates subatomic particles):

• particle accelerator
• atom smasher

• retrocaecal

accelerātor

1. second-person singular future passive imperative of accelerō
2. third-person singular future passive imperative of accelerō

accelerator c

1. (chemistry) accelerator; a substance which speeds up chemical reactions.
2. (physics) accelerator; a device which accelerates different kinds of particles to large velocities