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Từ điển WordNet v3.1 - WordNet Dictionary
accelerator



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

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