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Definition of ignition
1 : the act or action of igniting: such asa : the starting of a fireb : the heating of a plasma to a temperature high enough to sustain nuclear fusion
2a : the process or means (such as an electric spark) of igniting a fuel mixtureb : a device that activates an ignition system (as in an automobile) put the key in the ignition
Explore Merriam-Webster
Examples of ignition in a Sentence
There's a problem with the car's ignition.
Recent Examples of ignition from the Web
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Add another item to the list of once-common features — including ashtrays, spare tires and turn-the-key ignition switches — disappearing from new cars: fog lamps.
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GM has been defending against hundreds of lawsuits over faulty ignition switches that could cause engines to stall and prevent airbags from deploying in crashes.
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A similar pool set up by General Motors paid out nearly $600 million to settle 399 death and injury claims due to ignition switches that could shut off cars without warning.
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The devices allow the explosive gas and pressure from the ignition of gunpowder — the same force that propels a bullet — room to expand and dissipate inside the muffling device.
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Later, as Putman got into Moreland's Honda Civic, Hodgkinson opened the car door, turned off the ignition, slashed her seat belt with a pocketknife and ultimately tried to choke his grandniece, police said.
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But the ignition of the star releases energy that drives away much of the gas within a relatively short time.
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The ignition switch crisis, in which an employee allegedly hid the truth about dangerously defective parts for years, provided the first window on another side of the new GM.
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When his car eventually stopped, an officer reached in and put the car in park while another reached for the ignition.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ignition'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of ignition
1612
IGNITION Defined for English Language Learners
ignition
playDefinition of ignition for English Language Learners
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: the electrical system in an engine that causes the fuel to burn so that the engine begins working
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: the device that is used to start a car's engine
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: the act of causing something to start burning : the act of igniting something
IGNITION Defined for Kids
ignition
playDefinition of ignition for Students
1 : the act of causing something to start burning
2 : the process or means (as an electric spark) of causing the fuel in an engine to burn so that the engine begins working
3 : a device that is used to start a motor vehicle Put the key in the ignition.
Learn More about ignition
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See words that rhyme with ignition Spanish Central: Translation of ignition Nglish: Translation of ignition for Spanish speakers Britannica English: Translation of ignition for Arabic speakers Britannica.com: Encyclopedia article about ignition
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