accelerator

Từ điển Oxford Learners Wordfinder Dictionary

noun

1. a pedal that controls the throttle valve (Freq. 2)
- he stepped on the gas
• Syn:
accelerator pedal, gas pedal, gas, throttle, gun
• Derivationally related forms:
throttle (for: throttle), accelerate
• Hypernyms:
pedal, treadle, foot pedal, foot lever
• Part Holonyms:
car, auto, automobile, machine, motorcar,
airplane, aeroplane, plane
2. a valve that regulates the supply of fuel to the engine (Freq. 1)
• Syn:
throttle, throttle valve
• Derivationally related forms:
throttle (for: throttle), accelerate
• Hypernyms:
valve
• Part Holonyms:
fuel system
3. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
• Syn:
catalyst
• Ant:
anticatalyst (for: catalyst)
• Derivationally related forms:
catalyze (for: catalyst)
• Topics:
chemistry, chemical science
• Hypernyms:
activator
• Hyponyms:
biocatalyst, enzyme, platinum black
4. a scientific instrument that increases the kinetic energy of charged particles
• Syn:
particle accelerator, atom smasher
• Hypernyms:
scientific instrument
• Hyponyms:
betatron, induction accelerator, charge-exchange accelerator, Cockcroft and Walton accelerator, Cockcroft-Walton accelerator,
Cockcroft and Walton voltage multiplier, Cockcroft-Walton voltage multiplier, collider, cyclotron, linear accelerator, linac
• Part Meronyms:
storage ring

• Từ đồng nghĩa / Synonyms:
  particle accelerator, atom smasher, catalyst, throttle, throttle valve, accelerator pedal, gas pedal, gas, gun