English noun: accelerator |
1. | accelerator (artifact) a pedal that controls the throttle valve |
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| Samples | He stepped on the gas.
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| Synonyms | accelerator pedal, gas, gas pedal, gun, throttle |
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| Broader (hypernym) | foot lever, foot pedal, pedal, treadle |
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| Part meronym | aeroplane, airplane, auto, automobile, car, machine, motorcar, plane |
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2. | accelerator (artifact) a valve that regulates the supply of fuel to the engine |
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| Synonyms | throttle, throttle valve |
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| Broader (hypernym) | valve |
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| Part meronym | fuel system |
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3. | accelerator (substance) (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected |
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| Synonyms | catalyst |
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| Broader (hypernym) | activator |
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| Narrower (hyponym) | biocatalyst, enzyme, platinum black |
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| Domain category | chemical science, chemistry |
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| Antonyms | anticatalyst |
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4. | accelerator (artifact) a scientific instrument that increases the kinetic energy of charged particles |
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| Synonyms | atom smasher, particle accelerator |
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| Broader (hypernym) | scientific instrument |
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| Narrower (hyponym) | betatron, charge-exchange accelerator, Cockcroft and Walton accelerator, Cockcroft and Walton voltage multiplier, Cockcroft-Walton accelerator, Cockcroft-Walton voltage multiplier, collider, cyclotron, induction accelerator, linac, linear accelerator |
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| Part holonym | storage ring |
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