Accelerator (Noun)
Meaning 1
(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected.
Classification
Nouns denoting substances.
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Meaning 2
A scientific instrument that increases the kinetic energy of charged particles.
Classification
Nouns denoting man-made objects.
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Hyponyms
Meaning 3
A pedal that controls the throttle valve; "he stepped on the gas".
Classification
Nouns denoting man-made objects.
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Meaning 4
A valve that regulates the supply of fuel to the engine.
Classification
Nouns denoting man-made objects.