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English definition of “ignition”

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ignition

noun uk   /ɪɡˈnɪʃ.ən/ us  
[C usually singular] the electrical system in an engine that causes the fuel to burn or explode in order to start the engine: Switch/Turn the ignition on. an ignition key [U] formal the act or process of something starting to burn
(Definition of ignition from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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