ig·​ni·​tion | \ ig-ˈni-shən How to pronounce ignition (audio) \

Definition of ignition

1a : the device that is used to ignite the fuel mixture in a gasoline engine put the key in the ignition
b : the process or means (such as an electric spark) of igniting a fuel mixture
2 : the act or action of igniting: such as
a : the starting of a fire
b : the heating of a plasma to a temperature high enough to sustain nuclear fusion

Examples of ignition in a Sentence

There's a problem with the car's ignition.
Recent Examples on the Web More officers responded to the car and noticed a screwdriver in the truck’s ignition. oregonlive, 4 June 2022 Twelve of those happened while the vehicle was parked and the ignition off. Ryan Felton, WSJ, 19 May 2022 Outfitted with a comprehensive grilling system, this gas grill has excellent ignition and heats up very fast. Adria Greenhauff, Better Homes & Gardens, 16 May 2022 There's also a twist-start ignition located front and center, and a locking lid. Rachel Klein, Popular Mechanics, 13 May 2022 Not knowing that the vehicle was used by Casey White and Vicky White, Stinson called police instead of 911 to check the vehicle, which still had a key in its ignition. Howard Koplowitz | Hkoplowitz@al.com, al, 13 May 2022 Just activate the build-in gas ignition to get those flames going and adjust the dial for the proper cooking heat. Barbara Bellesi Zito, PEOPLE.com, 5 May 2022 The result was a long, tall 3.3-liter block that used single-port intakes and twin ignition. Robert Ross, Robb Report, 2 May 2022 The key to the offense's ignition revealed itself in Tuesday's series opener. Evan Petzold, USA TODAY, 27 Apr. 2022 See More

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, in the meaning defined at sense 2

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Time Traveler for ignition

Time Traveler

The first known use of ignition was in 1612

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Dictionary Entries Near ignition



ignition charge

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Statistics for ignition

Last Updated

19 Jun 2022

Cite this Entry

“Ignition.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ignition. Accessed 28 Jun. 2022.

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More Definitions for ignition


ig·​ni·​tion | \ ig-ˈni-shən How to pronounce ignition (audio) \

Kids Definition of ignition

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.

More from Merriam-Webster on 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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