ignition
noun
ig·ni·tion
ig-ˈni-shən 
1
a
: 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
Palisades residents have sued LADWP, alleging that one of the utility’s electrical towers started a second ignition when it was knocked down at 10:30 p.m. on Jan. 7, about 12 hours after the Palisades fire began.
—
Los Angeles Times, 10 July 2025
Winds from the west to southwest of 15 mph to 25 mph, with gusts up to 40 mph, combined with extremely low humidity from 5 percent to 10 percent, creating conditions conducive to wildfire ignition.
—Anna Skinner, MSNBC Newsweek, 9 July 2025
Fire risk is defined as the potential damage a fire can do to an area in its existing condition, which can lead to municipalities requiring fuel reduction projects, defensible space and ignition resistant building construction.
—Nollyanne Delacruz, Mercury News, 8 July 2025
These seemingly small actions can lead to dry grass ignition, potentially sparking a wildfire.
—Ca Weather Bot, Sacbee.com, 29 June 2025
See All Example Sentences for ignition
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Los Angeles Times, 10 July 2025
Winds from the west to southwest of 15 mph to 25 mph, with gusts up to 40 mph, combined with extremely low humidity from 5 percent to 10 percent, creating conditions conducive to wildfire ignition.
—Anna Skinner, MSNBC Newsweek, 9 July 2025
Fire risk is defined as the potential damage a fire can do to an area in its existing condition, which can lead to municipalities requiring fuel reduction projects, defensible space and ignition resistant building construction.
—Nollyanne Delacruz, Mercury News, 8 July 2025
These seemingly small actions can lead to dry grass ignition, potentially sparking a wildfire.
—Ca Weather Bot, Sacbee.com, 29 June 2025
See All Example Sentences for ignition
Cite this Entry
“Ignition.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ignition. Accessed 18 Jul. 2025.
Copy CitationKids Definition
ignition
noun
ig·ni·tion
ig-ˈnish-ən
1
: the act of igniting
2
: the process or means (as an electric spark) of igniting a fuel mixture
also
: an electrical device for operating an ignition system (as in an automobile)
put the key in the ignition
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